v16.0.0-canary.12

Core Changes

• Add rendered search to router state: #84983
• [segment cache]: delay revalidation prefetch pings 300ms: #84981
• Show relative path from cwd for Proxy Middleware file conflict error: #84993
• [Cache Components] fix docs for cacheLife("seconds"): #85004
• Rename MiddlewareMatcher to ProxyMatcher: #85005
• [Breaking] Rename instrumentation onRequestError context.routeType from middleware to proxy: #85006
• [turbopack] Prevent accidental access to .next: #84714

Misc Changes

• Turbopack: Track errored tasks as dependency when using untracked(): #84914

Credits

Huge thanks to @sokra, @acdlite, @ztanner, @devjiwonchoi, @lubieowoce, and @lukesandberg for helping!

v16.0.0-canary.11

Core Changes

• Relax default.tsx validation for parallel routes leaf segments: #84767
• Add codemod for removing unstable_ prefix: #84974
• Interception routes match from nested route navigation: #84898
• [Cache Components] Allow unstable prefix for cacheLife and cacheTag: #84934
• Add codemod for removing experimental_ppr: #84979
• fix: throw error during build when invalid export for Proxy: #84886
• [cache components]: prevent expired entries from being served: #84975
• Delete old prefetch cache related code: #84977
• docs: Deprecation of Middleware: #84710

Misc Changes

• Docs/sync with new features 0: #84861
• Turbopack: transpile runtime with swc: #84931
• docs: x-nextjs-stale-time header: #84901
• docs: Templates on navigation: #84493
• chore: Attempt to fix ppr-partial-hydration flakiness: #84672
• Update Rspack production test manifest: #84939
• Turbopack: rename Persistent Caching: #84896
• Turbopack: Add ChunkedVec test case: #84756
• docs: Add missing codemod docs: #84980
• Update prefetching.mdx providing more clarity on the usage of router.prefetch(): #84903
• docs: getting started installation and next lint removal: #84781
• docs: Split "Get Started: Route Handlers and Middleware" to Route Handlers and Proxy: #84708
• docs: Replace Middleware docs to Proxy: #84709
• chore: Remove redundant copy of rust reqwest crate: #84982
• [turbopack] Allow withRspack to work even if you already have NEXT_RSPACK set: #84987

Credits

Huge thanks to @icyJoseph, @wyattjoh, @mischnic, @devjiwonchoi, @gnoff, @bgw, @vercel-release-bot, @sokra, @ztanner, @acdlite, @hallucinogenizer, and @lukesandberg for helping!

v15.5.6

Note

This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Turbopack: don't define process.cwd() in node_modules #83452

Credits

Huge thanks to @mischnic for helping!

v16.0.0-canary.9

Core Changes

• [Cache Components] Remove unstable prefix from unstable_cacheTag: #84880
• [Cache Components] separate runtime stage in dev render: #84644
• Reland "Include server latency in debug info": #84950
• Update codemod ESLint template to Flat config: #84919
• Upgrade React from 56e84692-20251014 to 93f85932-20251016: #84963
• [dev] Fix Middleware and Proxy file conflict: #84965

Credits

Huge thanks to @gnoff, @lubieowoce, @eps1lon, and @devjiwonchoi for helping!

v16.0.0-canary.8

Core Changes

• Revert "Include server latency in debug info": #84932
• Development: Use process.hrtime for request time calculation: #84905
• Use correct JSX runtime for library-owned JSX in React Server: #84869
• Development: Implement request log time details: #84906

Credits

Huge thanks to @ztanner, @timneutkens, and @eps1lon for helping!

v16.0.0-canary.10

Core Changes

• stabilize experimental.enablePrerenderSourcemaps: #84916
• Stop manually setting stacktrace limit: #84968
• Turbopack: respect --profile CLI param: #84920
• Relax default.tsx validation for parallel routes leaf segments: #84767
• Add codemod for removing unstable_ prefix: #84974
• Interception routes match from nested route navigation: #84898
• [Cache Components] Allow unstable prefix for cacheLife and cacheTag: #84934

Misc Changes

• Turbopack: fix pageExtensions precedence: #84926
• Turbopack: fix client reference order for shared references: #84760
• Turbopack: turn panic into bail: #84927
• Docs/sync with new features 0: #84861
• Turbopack: transpile runtime with swc: #84931
• docs: x-nextjs-stale-time header: #84901
• docs: Templates on navigation: #84493

Credits

Huge thanks to @mischnic, @ztanner, @eps1lon, @icyJoseph, @wyattjoh, @devjiwonchoi, and @gnoff for helping!

v16.0.0-canary.7

Core Changes

• [Cache Components] Remove unstable prefix from unstable_cacheLife: #84877
• fix: always use the safe stable stringify: #84909
• [Cache Components] Fix cacheSignal in dev render: #84846
• [dev-overlay] Never dedupe errors with different names or messages: #84908
• Remove deprecated experimental_ppr route-level configuration: #84871
• Include server latency in debug info: #84580
• Fix parallel routes ignoring generateStaticParams from primary route: #84889

Misc Changes

• Turbopack: expose client static assets correctly: #84695
• Turbopack: better errors for strip_prefix_len: #84882
• Turbopack: improve missing factory message: #84881
• CNA: Update template to use ESLint Flat config: #84917
• fix: process.env.TURBOPACK maybe undefined: #84885
• Turbopack: fix spacing on EcmascriptModuleAssetType: #84915
• Update Rspack development test manifest: #84890
• Update Rspack production test manifest: #84891
• Fix url-imports test: #84922

Credits

Huge thanks to @gnoff, @huozhi, @mischnic, @lubieowoce, @eps1lon, @wyattjoh, @devjiwonchoi, @SyMind, @sokra, @acdlite, and @vercel-release-bot for helping!

v16.0.0-canary.6

Core Changes

• Add nextjs condition when cacheComponents is enabled: #84843
• remove rdcForNavigations configuration & bundle with cacheComponents: #84870
• Convert eslint-config-next project to TypeScript: #84839
• [eslint-config] [Breaking] Use Flat config by default: #84874

Misc Changes

• Update turborepo env in workflows: #84879
• Turbopack: take task cache log before starting snapshot: #84755
• Turbopack: allow gzip compression on trace files: #84685
• Turbopack: process task result as part of the task completion: #84638
• Add test for eslint-config-next: #84838
• Turbopack: lower level drop collectibles: #84895
• docs: next/dynamic headings: #84492

Credits

Huge thanks to @gnoff, @ijjk, @ztanner, @sokra, @devjiwonchoi, and @icyJoseph for helping!

v16.0.0-canary.5

Core Changes

• feat: using @next/rspack-core: #84221
• Upgrade React from ead92181-20251010 to d7215b49-20251013: #84850
• Turbopack build: Switch to using workerthreads for process: #84818
• [Cache Components] Dev - restart render on cache miss: #84088
• Update font data: #84785
• Fix build compile mode if pages dir does not exist in Next.js 16: #84783
• improve next config schema validation errors: #84847
• Upgrade React from d7215b49-20251013 to 56e84692-20251014: #84860
• warnOnce for Middleware deprecation: #84862
• Add codemod for Middleware API to Proxy API: #84824
• Deprecate Middleware API and add Proxy API: #84764
• remove clientParamParsing configuration & bundle it with cacheComponents: #84763
• remove dynamicIO flag: #84872
• Bump eslint-plugin-react to 7.37.0: #84876

Misc Changes

• docs: soft 404's, Suspense and loading.tsx: #83867
• [turbopack] Discuss Core Web vitals in our bundle size gap docs: #84837
• [turbopack] document missing webpack loader features: #84849
• [turbopack] fix typo in docs: #84868
• [turbopack] Remove the implementation of TaskInput from AutoSet: #84867

Credits

Huge thanks to @SyMind, @icyJoseph, @timneutkens, @lubieowoce, @vercel-release-bot, @greguintow, @huozhi, @devjiwonchoi, @lukesandberg, and @ztanner for helping!

v16.0.0-canary.4

Core Changes

• Use ESLint Flat Config: #84800
• fix missing flight-router-state-tree header normalization: #84718
• Write .next/dev/types/**/*.d.ts to default tsconfig: #84747
• Upgrade React from 9724e3e6-20251008 to ead92181-20251010: #84793
• [mcp] capture next config schema errors: #84832

Example Changes

• [docs] fix(with-supabase): Update README env variables: #84745

Misc Changes

• Update test/CNA templates React version to 19.2.0: #84736
• Turbopack: use the same serialization method for lookup as for storing: #84765
• Turbopack: update petgraph: #84757
• [turbopack] Issue 'too many matches' warning for DirAssets also: #84768
• Revert "Fix flakey overlay feedback test": #84819
• [test]: de-flake client-cache.original.test.ts: #84831
• [ci]: set NEXT_TEST_VERSION to release tag for deploy tests: #84840

Credits

Huge thanks to @eps1lon, @devjiwonchoi, @CarloQuick, @sokra, @lukesandberg, @ztanner, and @huozhi for helping!