Next.js 16.4.0

Next.js is a React-based framework that enables developers to build fast, SEO-friendly web applications. It extends React by adding powerful features like server-side rendering, static site generation, API routes, and optimized performance.

It is widely used for:

• Marketing websites

• SaaS applications

• E-commerce platforms

• Full-stack web apps

Next.js 16.4.0 Release Notes

Check out the 16.4 announcement post to get an overview of the changes. Core Changes Show compiler plugin warning in more situations: #75682 fix(scripts): correct typo in rm.mjs error message: #87015 docs: improve clarity and punctuation in README: #86096 Fix debug build paths Pages Router support entries: #93529 bundle-analyzer: record historical snapshots on each analyze run: #93520 fix: detect proxy.ts correctly with compound pageExtensions: #93246 feat(turbopack): support false values for resolveAlias config: #93331 Misc Changes docs: correction to dynamicParams migration: #96624 docs: proxy event argument: #96435 docs: remove experimental note from runtime prefetching: #96615 Preserve per-segment prefetching after dynamic navigation: #96583 Rename static generation stream option to waitForAllReady: #96564 Remove obsolete static generation plumbing: #96563 [turbopack] Drop dead writes to exports: #96381 [turbopack] Ignore writes to exports after a module.exports = {} writes: #96380 [turbopack] Add test for sideEffects with optimizePackageImports: #96549 [turbopack] Strip leading BOM before parsing CSS: #96678 Upgrade React from cbb046ab-20260731 to 7dfc7ccd-20260803: #96550 docs: use relative doc links in instant-navigation error pages: #96672 Turbopack: terminate failed plugin worker threads: #96592 Fix HTML-limited bot matching in prerender bypass rules: #96584 [ci] Fix create_release_branch for new repo permissions: #96641 test: skip action module instance deploy test: #96629 docs: quote the dynamicParams build error in a blockquote: #96633 [react-sync] Open pull requests as the bot that authors the commits: #96682 [Bench] Fixes for pure Fizz bench: #96771 Derive foreground cache revalidation from the consumer: #96731 Fix race when navigating Back before hydration: #96252 docs: present each Skill as steps in the AI agents guide: #96751 Reuse completed cache entries for the rest of a request: #96727 Upgrade React from 7dfc7ccd-20260803 to 11eddecd-20260805: #96735 Remove WorkStore execution mode: #96674 Remove cache revalidation execution mode reads: #96670 Separate App Route render and prerender pipelines: #96662 Remove App Page execution mode reads: #96660 test: fix missing await in css-chunking test: #96725 docs (Skills): stop assuming app/ at the root and port 3000: #96696 Implement next/font BeforeResolvePlugins as ImportMappingReplacement: #95808 Use Tailwind Turbopack loader in create-next-app: #96606 docs: instant navigation quick start with an adoption prompt: #96663 Separate App Page render and prerender pipelines: #96659 Move App Router execution intent to entrypoints: #96640 Pass explicit render capabilities through App Render: #96576 Pass explicit prefetch hint policy through App Render: #96572 Replace WorkStore isStaticGeneration with executionMode: #96570 docs: document ! exclusion and src/ prefix for --debug-build-paths: #96703 Change loadManifest to return undefined with handleMissing: #96530 Refactor server from CacheNodeSeedData -> TransportData: #96679 Unify full/partial navigation response types: #96439 Unify RouteTree and CacheNodeSeedData on the client: #96406 Consolidate Promise.withResolvers polyfills: #96772 [ci] Open automated update pull requests with nextjs-bot: #96683 Require Cache Components for Instant Navigation testing: #96745 Fix use cache over- and under-invalidation in dev: #96235 Fix which pages the dev server announces, and when: #96250 docs: update redirected links to current targets: #96723 Fix(deployment-id): prevent exception on old webkit: #94604 [fragment-scroll] Remove config.experimental.appNewScrollHandler: #95602 [turbopack] Enable reexport-unknown execution test: #96774 ci: stop publishing @vercel/devlow-bench: #96887 fix(turbopack): name the module in the non-ESM-placeable error, and stop duplicating the importer in traces: #96560 fix(turbopack): support type: 'text' in rules, and error on binding imports of non-ESM modules: #96558 Lint devlow-bench with the root eslint config: #96871 Remove turbopack/packages and relocate devlow to packages/: #96860 Flush pending revalidations for forwarded action error responses: #96945 Handle Server Actions on dynamic PPR fallback routes: #96932 Turbopack: Improve how DiskWatcher is configured and fix polling watcher bugs: #96440 Turbopack: Allow DiskWatcher to use a mocked DiskFileSystem, add a small unit test: #96353 [turbopack] Add e2e test that uses component chunks + workers: #96556 [turbopack] Support experimental.serverMinification & expand experimental.turbopackMinify: #96578 Add a turbopackChunking documentation page for pages router: #96698 [turbopack] Don't run Webpack tests on Turbopack-only changes: #96656 [turbopack] Enable the shared runtime by default: #96778 [turbopack] Enable CJS tree shaking by default: #96779 refactor: clean up places that needlessly list all RenderStages: #96907 Fix the documented invocation for generating tests non-interactively: #96896 Make NextConfigComplete typing more accurate: #96700 Upgrade to swc 75: #96702 docs: link View Transitions skill on skills.sh and clarify the example prompt: #96863 [ci] Reset the turbopack deploy test project in the weekly cron: #96822 docs: add authentication with Cache Components guide and iron-session example: #95802 [turbopack] Fix a potential deadlock in scope_and_block: #95695 Remove the turbopack-build-events trace span, use next build instead: #96746 docs: add export const dynamic = 'force-static' to Route Handlers example on Static Exports: #96964 [turbopack] Follow re-exports for side-effect free async modules: #95993 [turbopack] Treat constants with values referencing other values as unsafe: #96190 [refactor] Rename encodeCacheTag to encodeHeaderSafe: #96936 Fix formatting of Google Fonts section in documentation: #88447 Fixing a bug - typo issue fixed: #97141 examples: fix Webiny API env variable name: #97134 docs: fix Link prefetch grammar and Client Components wording: #97132 Use emitted app entries for post-build processing: #97139 docs(mdx): fix package name in .md handling section: #97131 [turbopack] Reduce native React Compiler work: #96820 docs: rename repo to repository for consistency: #87849 Fix typo in Data Access Layer section: #87202 docs: runtime prefetching -> optimizing prefetching: #96934 [CC] Track APIs that cause incompatible static/app shells: #97040 Fix client component loading span timing: #96455 Trace development route compilation: #96454 Prefix 'use cache' debug logs with the full directive: #97037 Revert "[turbopack] Enable CJS tree shaking by default (#96779)": #97018 Revert "[turbopack] Follow re-exports for side-effect free async modules": #97009 [fragment-scroll] Rename ScrollAndMaybeFocusHandler to ScrollHandler: #96828 Trace development route preparation: #96453 test: cleanup Turbopack snapshot config: #97013 Remove unused htmlLimitedBots from renderOpts: #96701 fix(turbopack): point at the glob that matched a file with no module type: #96561 [turbopack] Bail CJS tree-shaking on var x = module.exports = {}: #97130 docs: server client and directives: #96145 docs: clarify client cache freshness after hydration: #97180 docs: create client-side fetching guide: #96341 Turbopack: accept a module type argument for import.meta.glob: #96991 docs: align Cache Components authentication guide title: #97143 test: re-enable a few more passing NFT unit cases: #97017 [turbopack] Do the CJS analysis needed for scope hoisting: #95826 Remove legacy PPR code paths: #96868 Use Cache Components as the internal PPR signal: #96827 Make legacy PPR paths explicit: #96753 fix: typos in code comments: #97137 Fix spelling in two comments: #97136 Decouple loader tree construction from children ordering: #97192 Bump lightningcss: #97159 Update gh-stack skill guidance: #97163 [test] Unflake use-cache-custom-handler-dev tests: #97187 Forward a build-container pin to deploy-test deployments: #97191 Fix shared Turbopack runtime initialization race: #97215 Fix stale data after navigation despite revalidation: #95439 [turbopack] Only use the shared runtime by default on canary: #97208 test: fix 'ouput' typo in parseIdsFromCliOutput: #97266 Add the mtime fallback back: #97268 Allow issue participants to request reopening: #96947 [turbopack] Document clusters for chunking: #97267 Link to issues in the contribution guide and discourage trivial PRs: #97188 Stop serializing hmr version state: #97146 [turbopack] Add clusters to chunking heuristics: #95157 [test] Redirect the deployment host in-process for proxy deploy tests: #97260 [test] Unflake two cache-components-dev-streaming assertions: #97246 [test] Unflake use-cache-default-profile-expire-zero tests: #97250 Allow running ncc before pnpm build: #97234 Invalidate deferred Webpack entry sources: #97205 Unify how a response's shell and full payloads are written: #96878 Convert per-segment prefetches to NavigationFlightResponse format: #96877 Unify how server responses are written into the client cache: #96876 Convert tree prefetches to NavigationFlightResponse format: #96788 fix(next/image): skip 0-byte entries when initializing disk LRU cache: #94068 Update authentication diagram URL: #97320 Add a script for adopting fork pull requests: #97252 Migrate napi-rs bindings from v2 to v3: #95412 Upgrade React from 11eddecd-20260805 to 22e4f993-20260811: #97249 Add RDC compression rollout controls: #97247 [testmode] Fix infinite recursion in testmode passthrough fetch: #96525 Turbopack: add imports_wildcard NFT unit test: #97373 Turbopack: improve chunk_item_content docs: #97370 test: Reenable i18n-api-support deploy test for Turbopack with adapters: #96898 Trace instrumentation startup: #97296 Trace route module preparation: #97295 Trace route module loading: #97318 fix(deps): bump satori and @vercel/og: #97276 [test] Cover 'use cache: private' in route handlers: #97349 Fix missing Pages runtime in adapter Pages API outputs: #96819 docs: align SPA guide reducer example with React conventions: #97341 Update blob version.: #97342 Upgrade React from 22e4f993-20260811 to eb8feb71-20260814: #97382 Adopt SelectedMetadata for metadata rendering: #97387 fix(next/image): reject empty image on read/write to disk cache : #97278 Turbopack: remove stale manifests for deleted routes: #97333 Turbopack: make unreachable codegen more generic: #97385 Wait for back-before-hydration recoveries in the browser: #97321 Extract metadata resolution primitives: #97388 test: update React 18 redbox snapshot: #97415 Remove server route matcher stack: #94157 Anchor the async local storage instances to global symbols: #97255 test: deflake use-cache-size-zero warm reload: #97421 Scaffolding for concurrentRouterQueue flag: #97413 Reorganize client router modules: #97402 fix(turbo-persistence): allow 32-bit usize conversion: #97288 test: restore missing NFT exports* unit fixtures: #97459 [ci] Fix backport canary release dispatch: #97383 turbo-tasks-backend: Enforce that tasks exist when accessing them: #96043 turbo-tasks-backend: add persistence delete/tombstone plumbing for GC: #95975 turbo-persistence: add key-value tombstones for MultiValue families: #96929 Trace lazy App Route module loading: #97439 [ci] Wait for the next version to be available on npm before deploy tests: #97460 docs: fix stale Dev Overlay README link in contributing guide: #97486 docs: app router reference accuracy: #97477 test: Don't wait trying to load non-existing images: #97488 test: cover dynamic APIs with i18n base path: #97367 style(examples): remove redundant justify-content declaration: #97222 docs: rename Vercel Edge Config to Global Config in redirecting guide: #97456 fix: improve form accessibility by associating labels with inputs: #96335 [docs] fix: grammar typos in linking and navigating guide: #95544 fix(examples): correct error message typo: #97223 docs: fix typos in example links: #97149 Model prerenders as render candidates: #97431 Turbopack: support character class ranges in regex: #97502 docs: warn when catching permanentRedirect: #97496 Remove the development debug channel persistence: #97510 Stop the browser from restoring stale pages in development: #97505 Turbopack: gracefully handle outputFileTracingIncludes matching a symlink: #97507 docs: mention Valibot as validation library option in forms guides: #97468 [PPF] Remove unstable_eager: #97524 [PPF] Do not mark complete shell requests as partial: #97503 fix: add accessible label to icon-only link: #96334 Fix stale cross-references in skills/: #97566 docs: generateMetadata values should be serializable with use cache: #97551 Move preview props into separate manifest: #96004 docs: adjust interactive app guide: #97558 Turbopack: allow TURBOPACK_PRINT_CHUNK_GROUPS in release builds: #97515 [test] Point next-image-legacy images at a reachable endpoint: #97545 test: improve error-on-next-codemod-comment flakiness: #97553 Turbopack: cross-module constants: #90300 test: better isolate concurrent-install suite: #97546 docs: outlining and lcp: #96942 Turbopack: More aggressively debounce filesystem watch events if we detected changes to node_modules: #96116 docs: document metadata pagination field: #95509 docs: document deploymentId build ID override and Pages Router skew in 16.2: #97645 Upgrade React from eb8feb71-20260814 to eafeac09-20260819: #97636 Turbopack: rename to use turbopack: no side effects: #94427 refactor: move useDynamic{Route,Search}Params to reduce snapshot churn: #97360 [PPF] unstable_navigation(): #96908 [PPF] Scaffold unstable_navigation(): #97236 docs: Explicit cache output description: #97548 Improve Cache Components sync IO migration guidance: #97572 [test] Use a non-native stub for the server externals list test: #97614 Avoid GitHub API rate limits for create-next-app examples: #97612 [test] Cover the prerender worker-thread backend with an addon we control: #97543 [test] Convert the prerender-native-module suite to local fixture packages: #97542 [test] Replace the turbopack-reports sqlite3 dependency with a local addon fixture: #97541 [test] Drop the dead sqlite3 build approval from the sharp-basic suite: #97540 Remove HmrTarget: #97253 Keep HMR instructions typed until serialization: #96569 Serialize frozen collections by value only: #96686 feat(turbopack): isolate HMR listeners across microfrontends: #95997 Turbopack: deduplicate Pages Router app chunks: #97664 [react-sync] Check assignability before assigning the actor: #97638 fix: preserve trailing slash during export MPA fallback: #97613 Turbopack: Split the read and write codepath data structures for symlinks: #97395 Turbopack: Show last modified file when waiting for the filesystem to settle: #97648 docs: fix parallelRouteKey parameter name in useSelectedLayoutSegment(s): #97710 Turbopack: Avoid cloning paths in fs watcher if the path is already in a map: #97655 Remove generated error codes: #97687 [PPF] Instant validation for unstable_navigation(): #97309 Turbopack: trace graceful-fs calls: #97694 Migrate some async blocks to async closures: #97666 turbo-tasks: add scope_unbounded, a scoped execution primitive that allows more work to be discovered: #95974 test: make app-document-import-order more robust: #97682 Add a Turbopack error for missing root layouts: #97639 Improve Partial Prefetching adoption checks: #97637 test: stabilize poisoned proxy error overlay: #97609 docs: correct the upper stale bound for App Shell exclusion in cacheLife: #97653 docs: Adapters entry page lists its children pages twice: #97677 [PPF] unstable_prefetch(): #97622 [PPF] Scaffold unstable_prefetch(): #97618 docs: clarify beforeInteractive placement for root layouts: #97643 fix(turbopack): give eager import.meta.glob values the ESM namespace: #96559 introduce an options struct for constructing backend storage: #97284 [devtools] Fix indicator dragging on touch screens: #97723 Add next/cache-handlers types entrypoint: #97592 Remove unused return values from getPageStaticInfo: #97661 [turbopack] defer NFT module content hashes: #97773 test: deflake basePath external navigation: #97611 docs(adapters): document assetsHashes and routing.middlewareMatchers: #96536 Migrate remaining async blocks to async closures: #97701 Turn off the adapter route collapses by default: #97774 Serve a run of fallback shells from one route entry: #97738 [test] Capture the route table for apps with several param shapes: #97728 Stop emitting a separate route entry for a dynamic route's RSC form: #97726 Stop emitting a redundant route per prefetch segment: #97720 [test] Capture the dynamic routes a build passes to an adapter: #97719 turbo-tasks: compile conditional cell updates once, not per cell type: #97763 Turbopack: add unit test coverage for FileSystemPath::hash_file: #97743 Record fallback cache lifetime for blocking PPR routes: #97821 Document catchError for the Pages Router: #97748 clippy: allow needless late init where it makes sense: #96410 Turbopack: emit/collect: #96631 docs: note that response headers must be set before calling handle() in a custom server: #97693 Deduplicate the regress, wat/wasmparser and base64 dependencies: #97762 perf: split cold TurboMalloc accounting paths: #97767 turbo-tasks: execute scheduled tasks inline when they are read: #96808 Revert "Record fallback cache lifetime for blocking PPR routes (#97821)": #97835 Sweep stale Turbopack output from distDir on dev startup: #97591 Fix metadata prefetch cache key for search params: #97729 Turbopack: Improve file existence error handling in realpath_with_links and in module resolution: #97717 Write traces with buffered synchronous IO: #96874 fix(wasm): don't enable SWC's plugin host for wasm targets: #97859 fix(turbopack-node): make process_pool inert on wasm: #97858 fix(turbopack): make the SWC wasm-plugin backend native-only: #97857 fix(turbopack-trace-utils): skip the ctrl-c handler on wasm: #97856 refactor(turbopack-cli-utils): replace crossterm with owo-colors: #97855 fix(turbo-tasks-fs): create symlinks through the WASI API on wasi: #97854 fix(turbo-tasks): compile EventListener::wait on wasm: #97853 fix(turbo-rcstr): allow the napi feature on wasm targets: #97852 fix(next-napi-bindings): detect the target, not the host, in build.rs: #97576 Stop printing a stack frame for error message text: #97829 docs: clarify revalidateTag profile expire semantics: #97836 docs: param access on use-server: #97865 docs: fix typos and correctness issues in App Router docs: #97823 Add deploy release test skill: #97563 [test] Deflake the page config test for a string config value: #97848 test: stabilize read-only page recreation: #97674 Show the errors of an AggregateError behind a cause: #97830 Upgrade React from eafeac09-20260819 to bd6ea412-20260824: #97812 fix: reuse a single drain listener when piping Node streams through gzip: #97698 test: preserve server cache after compile error: #97724 Fix Turbopack resolution through chained symlinks: #97825 Add evals for whether agents actually use Next.js: #97816 evals: judge behavior instead of matching source text: #97826 Bump @vercel/agent-eval to 2.2.1: #97885 feat(turbopack): resolve /-rooted imports from the project directory: #97799 [ci] Use short-lived access tokens for preview-build uploads instead of static token: #97256 Turbopack: correctly trace through TypeScript __importStar: #97697 [turbopack] simplify ecmascript effect queue: #97771 Update default Create Next App favicon: #97634 fix: don't drop client references when the concatenated module id is 0: #97936 Replace resumed render bailout error with ReactDOM.browser behind a flag: #96844 Replace useSearchParams bailout error with ReactDOM.browser behind a flag: #96843 Replace CSRBailout error with ReactDOM.browser behind a flag: #96826 fix(next/image): reject non-2xx internal image responses: #97957 [test] Pin Vercel CLI to Node 20.9 compatible version: #97960 Re-enable AVIF image optimization: #97931 Don't report a client-aborted RSC stream as a render error: #96715 [PPF] Only track runtime accesses when the promise is used: #97165 Fix Turbopack re-export cycle deadlock: #97933 Port React's @gate test directive to the e2e harness: #96228 Migrate from box_patterns to deref_patterns: #97924 Turbopack: expose list of non-inlined env vars: #95310 feat(turbo-tasks-fetch): stub HTTP on wasm targets: #97585 fix(turbo-rcstr): make TaggedValue usable on wasm: #97577 docs: explain origin matching for allowedOrigins and allowedDevOrigins: #97805 Turbopack: improve Pat::Assign modelling in analyzer: #97867 Upgrade rustc to nightly-2026-08-20: #97665 Upgrade React from bd6ea412-20260824 to f789f203-20260825: #97887 [test] Fix flaky build CLI output capture: #97900 turbo-tasks-backend: parent_count reference counting: #95976 Upgrade Turbopack to hashbrown 0.15: #97808 ci: skip framework tests for agent evals and skills: #97998 Expand Turbopack dev cleanup: #97833 Add Cache Components option to create-next-app: #97695 Mark deploy release test skill as internal: #97961 Turbopack: shorten CSS module class names: #97944 Prune incomplete parallel route matchers: #97108 Upgrade React from f789f203-20260825 to 29d9d318-20260826: #97995 docs(skills): preserve prefetched UI during Partial Prefetching adoption: #97712 Omit undeclared children slots from app routes: #97184 Turbopack: widen the chunk ident hash from 7 to 13 base38 chars: #97945 Fix request-context retention in the default use cache handler: #97941 docs: improve discovery summaries: #97982 test: add test for local font with deployment id: #97987 Retain interception route host slots: #97242 test: disable flaky sync-io-blocks-root.test.ts: #97986 [test] Drain build output before start: #97947 Expose durableUseCacheEntries config in workStore: #97926 Pages Router: Deprecate React 18 support: #97689 Turbopack: call loadActionManifest for app-route: #97921 [test] Unpin Vercel CLI version: #97974 Turbopack: don't replace single-arg calls with argument in analyzer: #95277 Turbopack: allow compiling turbopack-node without a pool backend: #97943 Support immutable static assets with output: 'export': #97711 Fix build error when aliasing typescript to @typescript/typescript6: #97942 Fix optimistic routing for encoded dynamic params: #97948 Fix intercepted route params after Proxy rewrites: #97953 [PPF] Fix navigation() in prospective runtime prerenders: #98000 Revert "test: re-enable sync IO root coverage": #98050 Turbopack: drop rust analyzer skip annotation: #98047 Turbopack: add next_config.use_react_experimental getter: #98032 More granular cache keys for use-cache entries: #95233 [ci] Remove dormant code_freeze workflow: #97756 test: re-enable sync IO root coverage: #97996 [ci] Remove the unused wrong-issue-template workflow and action: #97749 [image-optimizer] Refactor into lightweight transform module: #97988 [ci] Remove the stale-issue workflow: #97758 [ci] Use presigned URLs to upload preview builds: #97922 Turbopack: allow get_definable_name to return a list: #97984 docs(examples): document env var handling in the Docker examples: #97968 Turbopack: unify member and in handling: #97985 Update outdated snapshots: #98011 Guard filesystem reads against unresolved symlinks: #97902 Turbopack: enable export mangling by default in production builds: #97676 Turbopack: mangle exported names for smaller bundle sizes: #97672 [ci] Remove the popular workflow and its action: #97753 Store keys in key order in SST blocks that omit hashes: #97480 Honor non-interactive mode in upgrade codemod prompts: #98030 Transform .mjs files with Next.js codemods: #98029 evals: stop requiring the removed viewTransition flag in agent-043: #98116 errors: shorten "use cache" messages and unify them into one factory: #94300 test: add adoption skill evals: #97759 Upgrade React from 29d9d318-20260826 to ff7445e6-20260831: #98113 [ci] Simplify upload-preview-tarballs workflow: #98109 devlow: use commander for cli argument parsing: #93860 [PPF] Pass in original searchParams for private-cache pages: #98041 docs: document create-next-app Cache Components prompt and flag: #97798 lazy server hmr: #96566 Fix Turbopack HMR recovery after dropped connections: #97966 test: Improve test cache handler implementations: #98098 docs: Fix the documented contract for custom cache handlers: #98039 chore: remove unused code from image optimizer: #98060 docs: add layout stability guidance for videos and iframes: #98070 tests: Improve use-cache-cross-deployment tests: #98049 turbo-tasks-malloc: report memory from mimalloc: #97761 Remove Edge runtime handling in use-cache-wrapper: #98139 Skip discussions in the issue_lock workflow: #98146 [ci] Fix issue_lock: #97755 docs: document preloading with Cache Components: #97864 chore: Remove expired sharp release age exclusions: #98120 Reduce Turbopack cache size with per-family compression: #97714 [test] Skip hooks of suites skipped by a lazy @force-gate: #98169 Bump swc to v77: #97407 Upgrade React from ff7445e6-20260831 to 21c89c9f-20260901: #98147 turbo-tasks-backend: parent_count-driven garbage collection: #97282 Remove the worker thread for turbopack builds: #96862 turbo-tasks-malloc: address review feedback on #97761: #98153 test: remove stale deploy manifest exclusions: #98051 Enable hourly next-maintainer auto-close workflow: #98225 Return client errors for unrecognized Server Actions: #98123 Add Next Maintainer auto-close workflow: #98197 perf(turbopack): skip ignored files during server tracing: #97475 docs: note that experimental.taint taints process.env: #98145 test: preserve static params during Cache Components migration: #98209 Upgrade web-vitals to v6 and report soft navigations: #97232 Upgrade React from 21c89c9f-20260901 to f4e439e1-20260902: #98188 Turn on the adapter route collapses by default: #98218 fix: suppress missing package manager errors in next info: #97946 Turbopack: fix source field in CSS sourcemaps: #88225 fix: track dynamic accesses in final runtime prerenders: #98255 docs: add API reference pages for skipProxyUrlNormalize and skipTrailingSlashRedirect: #97967 fix: route info segment overrides not updating in dev overlay: #96968 test(turbopack): remove dead top-level task unmarks: #98246 Fix flaky successive HMR changes test: #97610 docs: Remove version label from Turbopack in Pages Router: #98316 Bump to swc v78: #98268 Create next.config.ts when generating apps with pnpm new-test: #98364 test(evals): accept LayoutProps in App Router migration: #98365 [test] Run deploy tests against local JavaScript changes by default: #98353 [test] Resolve workspace:* packages to the version under test: #98330 turbo-tasks: explicit GC root anchoring + cross-session orphan reclamation: #96857 [PPF] Fix missing runtime-follow up if hints are stale: #98278 Instant validation for caches excluded from prerenders: #98342 [PPF] Model caches with stale < MIN_SHELL_STALE as prefetch-only data: #98339 docs: document excluding content from a prefetch in the prefetching g…: #98175 docs: add unstable_navigation and unstable_prefetch API references: #98122 Fix turbopacks webpack loader setup to support options being optional: #98270 [ci] Align build-and-deploy triggers with build-and-test: #98331 test: stabilize server action HMR update: #98322 Add version for loaders api: #98377 turbo-tasks-backend: let a GC pass wind down when it is blocking an operation: #96676 docs: preserve Next.js development state: #98276 Adds .resolve to loaders api: #98361 Turbopack: fix require handling with alternative: #98258 docs: clarify ISR with Suspense params: #98210 [cd] Update peerDependencies in prereleases to accept the current prerelease: #98411 test: stabilize error recovery snapshot timing: #98414 example: Use a Redis cacheHandler w/o dependencies: #95346 Support durable use-cache entries with client components: #98140 Upgrade React from f4e439e1-20260902 to 6c0e1047-20260908: #98363 fix: preserve repeated --require/--import flags when forking workers: #96651 ci: check that Turbopack compiles for wasm: #97588 feat(next-napi-bindings): build Turbopack for wasm: #97586 Turbopack: fix output tracing include glob traversal: #98382 test: support deploy exclusions with force gates: #98149 Fix: Turbopack CSS HMR error when editing an unmounted merged CSS chunk: #94551 Dev server: More aggresively scold users for deleting .next when we detect it while dev is running: #98253 turbo-persistence: add TURBO_PERSISTENCE_MMAP=0 to disable mmap: #97873 Fix dev route discovery startup race: #97920 Re-enable @vercel/devlow-bench publishing: #98236 test: migrate caching deploy exclusions to force gates: #98154 Typecheck the Turbopack ECMAScript runtime in CI: #98422 Fix initial Turbopack HMR update handling: #98385 Skip bundler config validation in next/jest and under test: #98392 Remove tsec: #98423 Stabilize scope_unbounded panic test: #98416 test: restore deployment exclusion for shared Cache Components tests: #98464 Resolve metadata independently across parallel routes: #97345 docs: preserve route behavior during Cache Components adoption: #98275 Add a fast-path to 'get_relative_path_to' for a potential common case when 'from' is empty: #98440 docs: document React browser API: #97621 Enable React browser bailout by default: #98439 [evals] Cover focused Cache Components and Partial Prefetching cases: #97813 Deflake gc_interrupt_is_self_healing: #98445 Adds this.target for webpack loaders: #98436 test(evals): validate delegated error boundary components: #98387 test: stabilize deferred entries HMR assertions: #98418 Add in warning for workers around the fsevents bug: #98447 skill: add Partial Prefetching optimizer: #96471 bundle-analyzer: add table view to single-build analyzer: #93523 bundle-analyzer: add table view to compare mode: #93522 bundle-analyzer: add compare view with treemap diff: #93521 [testmode] Stop using deprecated url.parse: #98194 fix(next/image): don't share the requester's socket with the internal image response: #98168 Fix duplicate background revalidation for 'use cache': #98446 Turbopack: Deduplicate project options documentation: #98465 Report incompatible parallel route slots: #97430 Require canonical routes for interception routes: #97428 Error when app pages do not match any route: #97401 fix(turbopack): add get_relative_request_to for paths used as module requests: #98497 [ci] Cleanup orphaned next-stats-action: #98348 [scripts] Move scripts (and benchmarks) off of node-fetch: #98347 [test] Move fixtures off node-fetch: #98346 [test] Move the harness off node-fetch: #98195 fix(turbopack): resolve ../ and /-rooted import.meta.glob patterns: #96557 Durable use cache: optimize env var existence checks: #98504 Adds this.mode for webpack loaders: #98532 Upgrade React from 6c0e1047-20260908 to 019019be-20260911: #98576 feat(next/image): Add experimental imgOptMozjpeg config: #98571 [turbopack] Lazily compile dynamic imports in development (client side): #97203 fix(devtools): handle pointercancel when dragging the indicator: #98506 [ci] Show full logs under GitHub Actions debug logging: #98501 fix(typegen): merge cacheLife types into next/cache instead of shadowing it: #98252 [test] Fix proxy-request-with-middleware deploy test: #98553 [ci] Remove the broken Test examples workflow and its test suite: #98517 Align fallback parameter staging with shell validation: #98512 Prevent synchronous IO from entering Cached Navigations: #98511 [ci] Fix scheduled Rspack test job: #98508 [ci] Remove Turbopack test manifest pipeline: #98507 test: stabilize OpenTelemetry collector lifecycle: #98427 Make TurbopackResult payloads disjoint: #98575 Durable use cache: fix runtime env var mutation: #98558 refactor(turbopack): drop the generic on new_atom, and stop it copying an owned string: #98520 Serialize turbo-tasks trybuild tests: #98415 Expose App Router runtime errors over HMR: #98438 test: avoid OpenTelemetry collector socket reuse: #98632 fix: Bump vendored @mswjs/interceptors from 0.42.0 to 0.42.5: #98607 Document codemod errors and intentional migration exceptions: #98565 Unify TODO markers for codemods and skip adoption-only codemods for upgrade: #98560 Optimize strict module factory chunks: #98421 Sort batched chunk items globally by path: #98433 test(turbopack): strongly read test operations: #98247 Add next dev wait for Turbopack shutdown: #98646 docs: document default turbopack.resolveExtensions: #98627 test: migrate package CSS side-effects coverage: #98635 Improve tree shaking through Next.js module wrappers: #98638 Trace export usage through client component proxies: #98621 fix(turbopack): trace cyclic modules to explicit entries: #98661 Use default pnpm package import method: #98703 Fix constant inlining in shorthand properties: #98662 test(turbopack): add strong read operation roots: #98248 Use pnpm for isolated test installs: #98425 [turbopack] Forward usage information across re-exports: #96282 [turbopack] Use options object for ESM references: #98680 test: enable verified runtime deploy tests: #98457 test: enable verified assets deploy tests: #98527 test: enable verified pages-router deploy tests: #98526 test: enable verified tooling deploy tests: #98525 test: enable verified app-router deploy tests: #98524 test: enable verified caching deploy tests: #98523 Fix unexpected query parameters in adapter deployments: #98584 Keep never-prerenderable params out of self-hosted shells: #98612 Fix addMissingDependency: #98588 docs: clarify metadata support in root not-found: #98670 Pages Router: do not return the __appRouter prefetch marker as route info on shallow navigation: #98187 Pages Router: key the client router filter prefetch marker by the as path: #98182 docs: add an intro paragraph to the glossary: #98654 Fix App Router locale path matching with Pages i18n: #98095 Upgrade React from 019019be-20260911 to ff8f88fc-20260915: #98693 Store code generation AST paths in a shared trie: #98581 Turbopack: Remove wasmer from lockfile by deleting dead feature option from our wasm crate: #98761 Prefer using join over try_join when you don't want a vec: #98547 Preserve committed app route response status during fallback: #98649 docs: scope React cache() guidance to the render pass: #98741 fix(next-custom-transforms): never place generated imports before directives: #98717 Pin tasks during construction: #98688 fix(use-cache): track root params read in "use cache" as vary params: #98674 [test] Fix Webpack deployment failures in PostCSS tests: #98710 Revert "Fix App Router locale path matching with Pages i18n": #98715 Nudge the agents for future defaults adoption: #98721 Add future defaults upgrade coverage for next upgrade --ai: #98643 Nudge the agents for latest version upgrade: #98640 Add "latest" upgrade coverage for next upgrade --ai: #98633 Nudge the agents for security vulnerable version upgrade: #98637 Add next upgrade --ai and security vulnerability coverage: #98562 agents: Add a --comments-only flag to pr-status script, trim down context bloat in AGENTS.md: #98781 Keep guards across restore owner handoff: #98700 [turbopack] Track webpack loader build dependency files: #98777 Replace lzzzz with lz4_flex: #98799 Bump to swc v79: #98809 [PPF] Fix unnecessary runtime prefetch with prefetch={true}: #98651 Keep metadata rendering stable across streaming modes: #97440 [test] Expand root-param navigation regression coverage: #98731 docs: rewrite the bots and crawlers section in the caching guide: #98782 Fix isStableBuild() treating commit preview tarballs as stable: #98811 perf(turbo-persistence): shard meta files by family: #97703 turbo-persistence: assorted read-path cleanups: #97797 turbo-persistence: give key block searches a dense region of their own: #97705 Introduce config options for Turbopack GC: #98378 Persist resurrected tasks as new tasks: #98729 Rspack: Remove bincode dependency from rspack by way of turbo-unix-path: #98855 Pin tasks across restore waiter handoff: #98728 test: honor skipStart for Vercel deployments: #98776 Use internal prefix for Turbopack shutdown env: #98747 test: retry waiting for ISR fallback in prefetch-static-shell: #98884 Fix generated Turbopack GC option docs: #98888 Add agent feedback behavior evals: #98887 Add experimental agent feedback workflow: #98582 Clean up unnecessary output asset creation: #98834 Properly disable laziness on next/dynamic: #98828 Set experimental.agenticAutoUpgrade after successful upgrade: #98871 example(cache-handler-redis): fix connection leak, hangs on a down Redis, and cross-page tag invalidation: #98716 Do not check Node version while agentic upgrade: #98852 test: run cargo unit tests with miri as well: #97535 test: unflake instant-validation: #98854 Preserve closed-parameter restrictions in client route prediction: #98889 [test] Fix deployment tests that relied on implicit startup: #98935 Turbopack: Add support for specifying additional roots: #98003 Turbopack: Add symlinks and additional roots to NFT metadata: #98469 Enable AI upgrade for canary: #99001 fix(turbo-persistence): preserve write errors on writer drop: #98840 Skip slow valued tombstone test under Miri: #98992 Improve the agent feedback review flow: #98937 Run AI upgrades with the latest official canary: #98870 test: move whole development-only suites out of e2e: #98842 Fix instant-false codemod to run on route segment filenames: #98880 test: migrate legacy deployment exclusion callers: #98473 Split revalidation errors by execution context: #98993 Enable strict route matching by default: #97397 Surface agent feedback gate connection failures: #98991 Generalize the build-time generator work-unit store name: #98891 Use structural React keys during server rendering: #98944 Upgrade React from ff8f88fc-20260915 to 59aff3e1-20260918: #98897 Remove unused hasWarnings and warnings: #96956 [PPF] Scaffold unstable_ensureStatic segment config: #98190 [agent-feedback] Respect CI and telemetry opt-out: #99062 Fix prefetch loop when a predicted route redirects: #98998 Fix dev overlay header layout on small screens: #99049 [PPF] Separate tracking of runtime data accesses for shells and prefetches: #98129 Harden next/og SVG serialization: #99061 test: clarify dev-only intent of duplicate Sass warning test: #98917 test: enable upward distDir deployment coverage: #98886 test: remove redundant deployment skips from mode-guarded suites: #98908 Turbopack: trace static project files referenced by packages: #98712 Durable use cache: fix next/image pulling in NEXT_DEPLOYMENT_ID: #98739 Unify hydration error tree details: #99008 Turbopack: forward module graph, entrypoint write, and emit spans to the JS trace: #98408 Fix startTime and shutdown delivery of forwarded Turbopack trace spans: #98426 Turbopack: loader change invalidation: #95732 perf: optimize CSS graph cycle removal: #98860 Use AGENTS.md for managed agent instructions: #99043 Turbopack: analyze mode tracing imports only: #98825 Turbopack: compact re-export registration: #98617 test: Add test for ESM and CJS exports of next/* APIs: #98882 Keep cached root parameters out of generic fallback shells: #98950 Fix missing content in Cached Navigations: #98767 [turbopack] Track members across namespace re-exports: #96396 [PPF] Implement unstable_ensureStatic = "shell" | "prefetch": #98191 [PPF] Validate unstable_ensureStatic nesting: #98357 Replace lerna task-runner usage with pnpm: #99040 [cd] Fix release branch gate and drop dead lerna publish config: #99039 Turbopack: fix "ModuleId not found for ident" regression: #99090 Fix private-cache segment reuse across root params: #98810 Turbopack: fix Unknown module type error for imports in webpack loaders: #99088 Nudge future defaults upgrades for manual next dev|build: #98874 Nudge latest version upgrades for manual next dev|build: #98873 Nudge security upgrades for manual next dev|build: #98872 Upgrade React from 59aff3e1-20260918 to 8b0da1c6-20260922: #99059 refactor(turbo-rcstr): drop unsupported 16-byte pointer width: #98355 test(turbo-tasks-backend): run the db_versioning tests on wasm: #97901 fix(turbo-tasks): let parking_lot block on wasm instead of panicking: #97860 test(turbo-tasks): run the wasm tests with a Node wasi host: #97789 [cd] Skip the release job when no new commits warrant a release: #98664 [test] Add fallback param deployment regression coverage: #98883 Turbopack: mangle exports behind an escaping namespace via the facade: #97770 test(dev): add dedicated compiler polling coverage: #97673 build(turbopack): upgrade notify to 9.0.0-rc.5: #98737 test(turbopack): add polling to filesystem watcher fuzzer: #98863 test(turbopack): fix filesystem watcher symlink expectations: #98983 test(turbopack): fix filesystem watcher read-write tracking: #98982 Don't re-request the App Shell to upgrade an ISR fallback: #94808 Fix unstable ensure static task annotation: #99075 test: update React 18 hydration error snapshots: #99073 Remove redundant unsafe_ignore annotations: #98961 Remove TraceRawVcs: #98953 test(turbopack): remove remaining test unmarks: #98376 Add experimental custom webpack support: #98862 Default agentic upgrades to a separate worktree: #99111 Improve agent upgrade failure message for missing app: #99117 Preserve error boundaries in on-demand partial prerenders: #99051 Preserve error boundaries during on-demand prerendering: #99037 docs: clarify Turbopack ModulePart export examples: #99104 Add some more verification and safety rules around custom distDir: #98997 Preserve closed-route admission across cache misses: #98964 Move suspension into operation guard: #99053 [agent-feedback] Shorten managed agent instructions: #99065 docs: clarify Cache Components build output: #98274 Update Rust namespace re-export snapshots: #99106 [ci] Skip preview tarball upload when the artifact is missing: #98713 [cd] Retry preview tarball uploads with backoff and richer diagnostics: #99060 Promote next analyze command: #99074 [ai-upgrade] Remind the agent to report the nudge: #99127 Tune Node server chunking for require overhead: #99120 Turbopack: fix another "ModuleId not found for ident" regression: #99102 test: enable deploy coverage for TypeScript config errors: #98849 test: enable deploy coverage for routing build errors: #98848 test: enable deploy coverage for cache build errors: #98847 Turbopack: chunk each layout segment once in production: #99100 bundle-analyzer: exclude traces from output types: #98536 turbo-tasks-gc: Defer most aggregation graph management until after GC has settled: #98591 Skip ESLint migration when scripts do not use next lint: #99103 Turbopack: pass RcStr to AnalyzeIssue: #99166 Use graph-backed codegen for client proxies and WASM loaders: #99115 [PPF] Instant validation for ensureStatic = "shell" | "prefetch": #98249 Fix flaky lazy-dynamic-imports.test: #99057 [test] Skip flaky deploy tests: #99156 [cd] Tolerate 409 when uploading preview tarballs: #99091 [test] Fix new deploy suites: #99162 Provide only the relevant context for agent upgrade: #99189 Turbopack: Add support for additionalRoots to deployment adapters: #99015 Use Sonnet 5 with 1M context for AI upgrade handoff: #99183 docs: font per-call preload scope and the declarations font-family override: #99167 Revert "Add experimental custom webpack support": #99227 test: stabilize lazy dynamic import error overlay: #98730 turbo-tasks-gc: tear down reverse edges when collecting a task: #99145 Sequence CI for branch-based PR stacks: #99086 Prefetch scheduler mirrors the navigation's tree walk: #98975 Separate route structure comparison from param comparison: #98974 Store the head as its own CacheNode: #98973 Record which params a CacheNode's data depends on: #98972 Use RouteTree for CacheNode tree: #98971 Remove the page/layout distinction from RouteTree: #98970 Fix root predicates: #98942 [turbopack] only remove followers if they are actually removed as children: #98843 turbo-tasks-backend: simplify the collectibility predicate and collect transient tasks: #98615 turbo-tasks-gc: Invalidating a deleted task should be a no-op: #98614 Avoid decoding prerender matcher parameters twice: #99121 Prepare 'use cache' for static root-param tracking: #99239 [test] Adjust the prerender-encoding open fallback gate for non-adapter deploys: #99240 Turbopack: avoid project-wide traces from package directories: #99238 Hoist resolved pathname into app page route match: #99259 docs: papercuts in image API reference: #99256 test: run the TypeScript version warning suites in deploy: #99195 test: drop skipDeployment where another gate already excludes deploy: #99194 bundle-analyzer: suspend while loading analyzer data: #98535 Fix Server Actions hanging after navigation to PPR pages: #99252 Fix blurry bundle analyzer treemap on low-DPI displays: #99197 Rename bundle analyzer snapshot naming option: #99251 Reduce stacked PR gate polling and use ts-jest: #99215 Name the internal trace server process: #99257 test: enable deploy coverage for asset and compiler errors: #98850 test: consolidate duplicate mode branches in build error tests: #99135 test: snapshot the proxy-runtime build error output: #99136 Avoid obsolete pnpm overrides in pack-next: #99199 bundle-analyzer: move comparison state into URL: #98530 simplify Transition by removing dead members: #94467 fix: respect metadata streaming policy in Edge SSR: #99128 Avoid facade splits solely for export mangling: #99285 test: forward __NEXT_PARTIAL_PREFETCHING to test-deploy: #99275 Turbopack: Allow webpack loaders to cross filesystem roots when reading dependencies: #99202 Explain prerelease security upgrade limits: #99230 Support latest agentic upgrades on prerelease channels: #99223 Allow agentic upgrades without Git: #99217 Show security upgrade insights in DevTools: #99002 Use focused npm advisories and nudge only for ready upgrades: #99222 [test] Stabilize middleware revalidation test: #99378 test: scope loader build dependency update to Turbopack: #99380 Remove CLAUDE.md symlinks in favor of AGENTS.md: #98910 Align ExecuteContext task accessor names: #99258 [test] Stabilize responsive dev overlay header layout test: #99376 Turbopack: skip trimmed side-effect imports in SideEffectsModule: #95781 Turbopack: preserve import with clauses when direct-binding: #95529 Turbopack: fix split_module correctness for app-router: #95522 Turbopack: fix empty tree-shake chunks desyncing part ids (#93424): #95516 Fix custom cache handlers missing on initial requests: #99372 Allow Draft Mode on unlisted closed routes in adapter deployments: #99370 Fix bundle analyzer source table delta sorting: #99369 test: fix stale snapshots after unstable_{prefetch,navigation} rename: #99371 Virtualize bundle analyzer source table: #98539 [PPF] Remove leftover debug log in router: #99365 Remove unstable_ prefix from navigation() and prefetch(): #99241 Lazy dynamic imports for ssr: #98836 Refine the Security Insight upgrade prompt: #99354 [PPF] ensureStatic = "navigation": #99171 docs: use prefetch={true} for links to ISR pages with Cache Components: #99261 Add agent feedback to create-next-app defaults: #99119 Make next-dev-loop browser headless by default: #98318 [test] Extend timeout for tests barely below it: #99305 docs: typo fixes: #99350 [ai-upgrade] ESC to move back during prompt: #99319 [ai-upgrade] Ask user to choose permission: #99291 [ai-upgrade] Ask user to choose model and effort: #99235 [ai-upgrade] Ask user whether to start upgrade in worktree: #99232 [create-next-app] Enable Cache Components by default in create-next-app: #99436 Include async module evaluation in client loading metrics: #99427 turbo-tasks-backend: fix leaf distance tracing compilation: #99443 Enable proxy export tests in deploy mode: #99400 docs: record API stabilization across Next.js 16 releases: #99420 test: migrate and explain custom server deploy exclusions: #98994 test: migrate and explain root-inference deploy exclusions: #99012 Enable build diagnostic suites in deploy mode: #99402 test(turbopack): remove filesystem fuzzer unit tests: #99089 [turbopack] Support webpack loader build dependency requests: #99071 [turbopack] Track webpack loader build dependency directories: #98838 [ci] Wire preview builds variables consistently: #99323 [ci] Enable PR comment in any repo: #99315 Fix bundle analyzer route selector: #98702 bundle-analyzer: use Rust React compiler: #98695 Link bundle analyzer empty states to source mode: #98542 Consolidate HTML render completion cleanup: #99426 Scope client component loading metrics to HTML renders: #99322 fix: preserve HTTP status codes during prerendering: #99078 test: enable deploy coverage for five verified suites: #99193 Document agent feedback field limits: #99415 test: migrate tooling deploy exclusions to force gates: #98156 Turbopack: Don't force non-recursive watcher for additional roots: #99396 turbo-persistence: intermediate merges take the newest files of similar size: #99433 turbo-persistence: space-amplification driven compaction with adaptive hash shards: #99268 test: enable basePath redirect deployment coverage: #99401 fix(incremental-cache): keep an ISR entry's cache lifetime across instances and restarts: #99289 Avoid mutating image qualities during validation: #99476 Remove the Cache Components deployment-test alias: #99446 Finalize the App Router dev indicator on output completion: #99384 [test] Cover external next/image in adapter deployments: #99466 Prepare image options without mutating configuration: #99394 [PPF] Use RDC in runtime prerenders: #98025 [PPF] Use RDC in cachedNavigations codepaths: #98005 test: add PPF coverage to use-cache and RDC tests: #99417 Restore static metadata prerendering for dynamic routes: #99463 Exclude metadata files from route handler type validation: #99377 Remove true from agentUpgrade option: #99461 fix: revalidateTag not reaching custom cache handlers when profiles differ : #99359 Enable agent upgrade reminders by default: #99311 Enable deploy tests for reusable fixture variants: #99404 test: enable compatible body-size cases in deploy: #98911 test: retain deploy exclusions for local process control: #99392 Enable nullish config tests in deploy mode: #99397 Always use generateBuildId if set explicitly: #99147 Set tracer library version: #98262 fix: propagate repeated tag revalidation from after(): #99499 Stabilize ensureStatic: #99513 Turbopack: Enable experimental.turbopackSharedRuntime by default: #99504 Measure AI upgrade nudges, handoffs, and completion: #99465 turbo-persistence: 32 bit fingerprints for the used keys AMQFs: #99333 Remove suspend during operations: #99383 test: migrate runtime deploy exclusions to force gates: #98159 test: migrate asset deploy exclusions to force gates: #98158 test: migrate Pages Router deploy exclusions to force gates: #98157 fix: stale usages of unstable_ensureStatic: #99540 Add unstable parameter matching APIs: #97393 docs: point next package security disclosure to HackerOne: #99459 docs: add ensureStatic reference and validation guidance: #99355 Enable Turbopack export name mangling by default for builds: #99362 Allow skipping React and ESLint upgrades: #99468 Prefer the declared package manager during upgrades: #99471 Use Next.js conventions in bundle analyzer UI: #98780 Pass App Page HMR state through a dev render context: #99487 Remove request forwarding from App Router error reporting: #99488 docs: self hosting immutable static assets: #97008 test: enable deployment fixtures with Corepack and portable tarballs: #99192 Resolve React dependency warnings from the target app: #99536 Move upgrade workflows out of public docs: #99546 Use Agent terminology throughout upgrades: #99545 Turbopack: Commit updated generated-native file: #99561 test: enable Relay multi-project deployment coverage: #99403 test: migrate independent App Router deploy exclusions to force gates: #99431 test: migrate mode-specific deploy exclusions to force gates: #98160 Optimize esm exports by shifting the protocol burden to getters: #98932 fix: fix pnpm builds in Docker examples: #97352 Assert transient task references are not serialized: #99300 Reorganize bundle analyzer toolbar: #98920 Show async module scope in bundle analyzer: #98918 Show bundle changes in compare treemap: #98837 improve disk read semantics around MustExist and AllowMissing: #99249 Allow opt-in facade-backed export mangling: #99309 Add bundle analyzer route summary: #98787 [turbo-tasks-backend] Correctly maintain outdated_collectibles to prevent unnecessary stale executions: #99386 Upgrade React from 8b0da1c6-20260922 to 278794d7-20261002: #99600 Warn when Partial Prefetching is not configured: #99452 Store the Turbopack module cache in a Map: #98947 Improve agent feedback reporting reliability: #99591 Enable empty generateStaticParams deploy diagnostics: #99406 test: enable Nx deployment coverage: #99407 test: enable deployment coverage for monorepo fixtures: #99395 test: capture deployment experimental flags in config: #99534 test: extract a shared helper for deployment feature flags: #99533 Move App Page header parsing to handler entrypoints: #99506 docs: clarify ensureStatic levels from dogfooding: #99590 Gate param-matching deploy tests on the adapter: #99582 docs: update the MCP guide for next-devtools-mcp 0.4: #99583 Document agent upgrades across Next.js: #99293 [test] Fix the legacy image preload order assertion for React 18: #99572 docs: Remove task decomposition and validation boilerplate from AGENTS.md: #99558 Turbopack: Use a FrozenMap for DiskFileSystemMap: #99569 [test] Expose first-run e2e test failures in CI: #99528 Turbopack: resolveFileUrl/placeholderFileUrl is always called with a module path: #99560 Turbopack: Remove implicit mismatched root fallthrough for AfterResolvePluginCondition, accept None as a root: #99556 Turbopack: Allow ResolveMap entries to match against all possible roots: #99555 Turbopack: Support import.meta.url in additional roots: #99511 Followup from #99249 remove some redundant tests and enable missing assertions all the time: #99605 Simplify turbo-tasks-backend guards and execution contexts: #99599 Add allocation and memory data to the trace-server MCP protocol: #98546 turbo-tasks-backend: check access in track_modification and only track Data on serialization invalidation: #99581 Fix CI break caused by #98932: #99621 Fix: Unnecessary Suspense fallback triggered by URL update: #99612 Don't suspend client params on shallow URL updates: #99611 Add React Compiler memoization preservation option: #98589 Unify bundle analyzer delta colors: #99607 Turbopack: Cache canonicalized paths without turbo-tasks, try to find the longest cached prefix first: #99270 Record parameter matching usage in build metadata: #99594 Bundle Analyzer Agent Skill: Stream versioned analyzer graph as JSON Lines: #99387 Revert "Optimize esm exports by shifting the protocol burden to getters (#98932)": #99704 [PPF] Log Sync IO errors in runtime prerenders: #99688 docs: clarify use client directive as a file level directive: #99703 Stabilize forbidden() and unauthorized(): #99689 turbopack-ecmascript-runtime: type-check every runtime file: #99670 test: unflake use-cache-search-params: #99691 Avoid mutating config for default export paths: #99496 Keep compile-mode metadata outside configuration: #99491 Keep dynamic asset prefixes outside configuration: #99490 eslint-config-next: support ESLint 10: #99628 Add Instant Insights for prefetch() and navigation(): #97801 rename RenderStage.Runtime to PrefetchRuntime: #99679 Collect root param dependencies for 'use cache' at build time: #99274 Add client fixes for fully static route errors: #99659 docs: clarify hover prefetching with Partial Prefetching: #99665 Durable use cache entries: sort env var list: #99657 next-swc: rebuild native when embedded js/src files change: #99669 Improve static route error guidance: #99724 docs: add Turbopack experimental config references: #99723 Show choices for agent upgrade prompt: #99727 docs: add Keeping pages static guide and align the navigation stage docs: #99493 Turbopack: Check the invalidator map before adding a path to a batch: #99711 docs: add guide for optimizing the static shell: #97737 Keep dev and build running during upgrade prompts: #99702 docs: use auth interruption APIs in examples: #99698 docs: recommend auth interruption APIs in error handling: #99696 [test] Update snapshots: #99713 Bundle Analyzer Agent Skill: Trace conditional async and worker chunk loading: #99174 Bundle Analyzer Agent Skill: Show route chunk groups: #99170 Bundle Analyzer Agent Skill: Show modules in generated JS/CSS files: #99173 Bundle Analyzer Agent Skill: Expose more route details in analyze data: #99172 turbo-tasks-backend: stop dirtying dependents of GC-collected tasks: #99647 turbo-tasks-backend: treat reads and connects of collected tasks as errors: #99646 turbo-tasks-backend: stop pinning tasks during restores and always discard missing tasks: #99645 Bundle Analyzer Agent Skill: Add analyzer skill: #99169 Document next analyze export in the package bundling guide: #99735 Revert stabilization of forbidden() and unauthorized(): #99734 Preserve configured output directories during static export: #99507 Rename skill to next-bundle-optimizer and document its usage: #99731 [turbo-tasks-backend] Clean up task state before publishing execution completion: #99729 Credits Huge thanks to @acdlite, @icyJoseph, @lukesandberg, @sampoder, @ztanner, @vercel-release-bot, @marcoshernanz, @mischnic, @timneutkens, @eps1lon, @gaearon, @aurorascharff, @unstubbable, @lubieowoce, @wbinnssmith, @molebox, @kyamaz99, @sokra, @Janpot, @bgw, @m-kawafuji, @koenpunt, @gnoff, @mayur9210, @Jashnavi25, @jarrensj, @akselipalmer, @DavidIlie, @kelvinampofo, @Stanzilla, @syedsohailhussain1, @gaojude, @hammadxcm, @jimmyhmiller, @lazerg, @styfle, @bryan-ferry, @gdborton, @hardfist, @niketchandivade, @seanbeirnes, @0ldh, @fabian-hiller, @devjiwonchoi, @biubiukam, @fireairforce, @QingHeSite, @marceloboeira, @leejpsd, @hamidrezahanafi, @jgruica, @zeeshan56656, @mlekhi, @dacgray, @Xanaado, @mezotv, @anujbolewar, @spirosikmd, @Amusac, @itsybitsci, @ranger-ross, @bmorros94, @jamiboym, @kostyniuk, @alangenfeld, @aryabyte21, @martinfrancois, @kassens, @orzazade, @Samiislam851, @lukahartwig, @uaoa, @swarnava, and @6iu8a for helping!

---

Key Features of Next.js

1. Server-Side Rendering and Static Generation

Next.js allows pages to be rendered on the server or generated at build time. This improves performance and search engine visibility compared to traditional client-side apps.

2. App Router and File-Based Routing

Routing is handled automatically based on the file structure. The newer App Router introduces layouts, nested routes, and better data handling.

3. Built-In API Routes

You can create backend endpoints directly inside your project, turning Next.js into a full-stack framework without needing a separate server.

4. Image Optimization

Next.js includes automatic image optimization, resizing, and lazy loading, which significantly improves page speed.

5. Performance Optimization

Features like code splitting, prefetching, and edge rendering help deliver fast loading times and smooth user experiences.

6. Edge and Serverless Support

Next.js works seamlessly with serverless platforms and edge functions, making it ideal for scalable deployments.

Quick start

1. Create a new Next.js app named my-app

2. cd my-app and start the dev server.

3. Visit http://localhost:3000.

#pnpm
pnpm create next-app@latest my-app --yes
cd my-app
pnpm dev

 #npm
npx create-next-app@latest my-app --yes
cd my-app
npm run dev

 #yarn
yarn create next-app@latest my-app --yes
cd my-app
yarn dev

 #bun
bun create next-app@latest my-app --yes
cd my-app
bun dev

• --yes skips prompts using saved preferences or defaults. The default setup enables TypeScript, Tailwind CSS, ESLint, App Router, and Turbopack, with import alias @/*, and includes AGENTS.md (with a CLAUDE.md that references it) to guide coding agents to write up-to-date Next.js code.

System requirements

Before you begin, make sure your development environment meets the following requirements:

• Minimum Node.js version: 20.9

• Operating systems: macOS, Windows (including WSL), and Linux.

Supported browsers

Next.js supports modern browsers with zero configuration.

• Chrome 111+

• Edge 111+

• Firefox 111+

• Safari 16.4+

Learn more about browser support, including how to configure polyfills and target specific browsers.

---

Performance and Scalability

Next.js is designed with performance in mind. By combining server-side rendering, static generation, and smart caching, it delivers fast load times even for complex applications.

When deployed on platforms like Vercel, it can scale automatically and leverage global edge networks.

---

Developer Experience

One of Next.js’s biggest strengths is its developer experience. It offers:

• Fast refresh during development

• Clear project structure

• Strong documentation

• Large community support

However, beginners may find concepts like server components, routing layers, and rendering strategies slightly challenging at first.

---

Pros and Cons

Pros

• Excellent performance and SEO capabilities

• Full-stack features in a single framework

• Strong ecosystem and community

• Flexible rendering options

• Easy deployment and scalability

Cons

• Learning curve for beginners

• Frequent updates can introduce breaking changes

• Some advanced features require deeper understanding of React

---

Who Should Use Next.js

Next.js is ideal for:

• Developers building modern web applications

• Teams focused on performance and SEO

• Startups and businesses needing scalable solutions

• Developers already familiar with React

It may not be necessary for very small projects where a simple static site generator is enough.

---

Next.js vs Traditional React Apps

While React focuses on building UI components, Next.js provides a complete framework with routing, rendering strategies, and backend capabilities built in.

This reduces the need for additional libraries and simplifies project architecture.

---

Final Verdict

Next.js is one of the most powerful and versatile frameworks in the modern web development ecosystem. It combines performance, scalability, and developer-friendly features into a single solution.

Next.js is an excellent choice for developers who want to build fast, scalable, and production-ready applications with minimal setup.

If you are building modern web applications and want performance, flexibility, and scalability, Next.js is one of the most popular frameworks available today. Developed by Vercel, Next.js simplifies complex development tasks while delivering production-ready performance out of the box.

Free

Download

Software Informations:
Developer:
Vercel
Operating System:
Framework
Date Added:
2026-10-08T07:04:08.596Z
Categories:

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