Next.js

Core Changes

• [AI] Ship bundled docs in next and generate AGENTS.md in create-next-app: #89850
• Turbopack: Implement server hmr in nodejs dev runtime: #89130

Misc Changes

• docs: adapt lead to source path patterns: #89392
• docs: Papercuts Feb26: #89484
• [test] Ensure new deploy test builds have the necessary env variables: #89846
• test: allow dpl query suffix in scss url-global expectation: #89856
• test: stabilize app-dir hash navigation RSC assertion: #89867
• Turbopack: Clean up unused register!() macro argument in test: #89869

Credits

Huge thanks to @icyJoseph, @eps1lon, @gaojude, @ijjk, @wbinnssmith, and @bgw for helping!

Core Changes

• Turbopack: Fix slow filesystem benchmark warning for next dev: #89798
• Add turbopackIgnoreIssue config to suppress Turbopack warnings: #89682
• Add support for with type: "text" under a new experimental flag, following what webpack did: #89560
• Remove unused devtools code handling React without use: #89793
• [devtools] Wrap overlay in Activity: #89818
• Add CSS URL deployment ID suffix support: #89771
• Fix cascading LRU eviction during prefetch batches: #89766
• Refactor prerenderManifest passing: #89765

Misc Changes

• Update flakey E2E deploy tests: #89792
• Update flakey E2E deploy tests no-prefetch: #89799
• Update Rspack production test manifest: #89741
• Fix devlow job timeouts: #89804
• Update Rspack development test manifest: #89740
• Turbopack Persistence: Improve heuristic for compacted database access: #89497
• Turbopack: remove ChunkableModuleReference trait: #89745
• docs: improve Graphite workflow documentation: #89488
• Remove --turbopack and --webpack flags from create-next-app: #89706
• docs: correct use term: #89438
• Turbopack: make routes hashes mainfest more incremental: #87107
• [test] Remove references to removed, internal PPR environment variable: #89832
• [docs] Add RedirectType usage example to permanentRedirect: #89833
• [test] Enable scroll related tests in Cache Component tests: #83245
• Next CLI flags documentation: #89750
• docs: update adapter docs for routing, handlers, and PPR: #89849

Credits

Huge thanks to @ijjk, @bgw, @vercel-release-bot, @sokra, @lukesandberg, @mischnic, @timneutkens, @vvscode, @eps1lon, and @unstubbable for helping!

Core Changes

• Turbopack: Server HMR infrastructure: #88870
• Turbopack: Reorganize runtime files into shared/runtime directory: #89461
• [Instant] Validation on client navs: #89777
• Turbopack: extract core hmr client logic into shared runtime: #88912

Credits

Huge thanks to @wbinnssmith and @lubieowoce for helping!

Core Changes

• Pass shouldCache to all manifest loading calls: #89713
• Add 2nd cloned body to FinalizationRegistry. Only used RuntimeStyles component for webpack: #88577
• Tracing: trace render times as render-path: #89763

Misc Changes

• Update Rspack production test manifest: #89701
• Update Rspack development test manifest: #89702
• clarify unstable_cache replacement with use cache: #89435
• [test] Add regression test for segment cache prefetch memory leak: #89756
• Improve not-found-with-pages test: #89538

Credits

Huge thanks to @vercel-release-bot, @mischnic, @abhishekmardiya, @unstubbable, @timneutkens, and @wbinnssmith for helping!

Core Changes

• fix(image): findClosestQuality returns 0 for low quality values: #89621
• Upgrade React from 2dd9b7cf-20260208 to 272441a9-20260209: #89722
• Avoid using unclosing prefetch streams in the browser: #89610

Example Changes

• Remove more examples: #89709

Misc Changes

• Turbopack: Remove old Vc::try_resolve_* methods in favor of the ResolvedVc alternatives: #89696
• Fix reset-project script for E2E deploy tests: #89693
• feat: move font variables to html in create-next-app: #89632
• reduce the number of shards on small systems: #89731

Credits

Huge thanks to @bgw, @ijjk, @icyJoseph, @shadcn, @sigmachirality, @unstubbable, and @lukesandberg for helping!

Core Changes

• Upgrade React from 95ffd6cd-20260205 to 2dd9b7cf-20260208: #89681
• Include AggregateError.errors in terminal output: #88999

Misc Changes

• Turbopack: remove unneeded benchmarks: #89592
• Turbopack Persistence: Remove amqf cache, store all amqfs in memory: #89562
• Add inline value support for small values (≤8 bytes): #89271
• [turbopack] remove the _backend field from TaskGuardImpl: #89015
• [Turbopack] Include CSS URL attributes, including Layer, Media and Supports: #89300
• docs: add task decomposition and verification guidelines: #89640

Credits

Huge thanks to @sokra, @lukesandberg, @robert-j-webb, and @bencmbrook for helping!

Core Changes

• fix: deprecated util._extend: #89614
• Fix missing non-deferred turbopack build items: #89616
• Revert "Ensure _middleware is consistent in adapter for name/id": #89624
• Omit unused arguments for server actions: #89651

Misc Changes

• Update metadata assertions: #89625
• Update vercel CLI version in flakey deployment-id test: #89652

Credits

Huge thanks to @Netail, @ijjk, and @unstubbable for helping!

Core Changes

• Ensure _middleware is consistent in adapter for name/id: #89559
• Ensure Errors with deep causal chains respect inspect depth: #89594
• refactor: extract route discovery into unified discoverRoutes() API: #88971
• Ensure static metadata are static outputs for adapters: #89574
• Resolve local variable references in error code SWC plugin: #89596
• Turbopack: Add --experimental-server-fast-refresh CLI flag: #89274
• Fix deployment id header when proxying: #89593

Misc Changes

• Turbopack: add turbo-persistence benchmark: #89446
• Fix spelling in robots.mdx documentation: #89565
• Proper e2e test of function determinism - adapter: #89522
• [test] consolidate the browser log test: #89601
• Fix flaky turbo cache pull with retries and graceful fallback: #89575
• Turbopack: Pass globals to node.js workers as well: #89261
• Upgrade rustc to 2026-02-05: #89591

Credits

Huge thanks to @ijjk, @sokra, @Thomas465xd, @mischnic, @eps1lon, @huozhi, @bgub, @unstubbable, @mmastrac, and @wbinnssmith for helping!

Core Changes

• Don't insert build id comment in HTML: #89478
• Clarify type checking error message: #89525
• Require explicit cacheLife on outer "use cache" when nesting short-lived caches: #89481
• [Instant] Instant validation in Dev: #89077
• Upgrade React from 3e00319b-20260203 to 95ffd6cd-20260205: #89550
• Turbpopack: fix is_persistent_caching_enabled: #89533
• Fix a small doc typo: #89553

Misc Changes

• Proper e2e test of function determinism: #88908
• docs: fix ISR guide link to res.revalidate: #89342

Credits

Huge thanks to @mischnic, @unstubbable, @lubieowoce, @pavan-sh, and @lukesandberg for helping!

Core Changes

• Ensure module contexts are always included in adapter traces: #89508

Credits

Huge thanks to @ijjk for helping!

Core Changes

• Add experimental.reportSystemEnvInlining for Turbopack: #89304
• fix: use signal-based exit codes to prevent inspector blocking exit: #89351
• Add Instant Navigation Testing API: #89465
• Support MPA navigations in instant(): #89469
• Handle Pages data route skew with deployment id header, take 2: #89325
• Include owner stack for forwarded errors if available: #89493
• [CC] Rename "unstable_prefetch" to "unstable_instant": #89448

Example Changes

• chore(examples): remove with-tigris example: #81843

Misc Changes

• Update Rspack production test manifest: #89423
• Update Rspack development test manifest: #89424
• Turbopack: improve suggestions for experimental.reportSystemEnvInlining: #89486
• docs: Fix syntax in proxy example code: #89395
• Add experimental flag to expose testing API in production builds: #89499

Credits

Huge thanks to @vercel-release-bot, @mischnic, @timneutkens, @acdlite, @JamBalaya56562, @ericrav, @huozhi, and @lubieowoce for helping!

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

• fix unlock in publish-native

This is a re-release of v15.5.11 applying the turbopack changes.

Example Changes

• chore(examples): remove with-recoil exmaple: #81836

Misc Changes

• Don't upload build cache for deployment tests: #89432
• Fix indentation of types of tests in docs: #89409
• Add separate E2E deploy env for turbopack tests: #89458
• Turbopack: Symbol.for and keyFor are sideeffect-free: #89454

Credits

Huge thanks to @mischnic, @JamBalaya56562, @wheresrhys, and @ijjk for helping!

Core Changes

• Replace flight navigation build id field with header: #88855
• Upgrade React from da641178-20260129 to ed4bd540-20260202: #89401
• Upgrade React from ed4bd540-20260202 to b1533b03-20260203: #89444
• Upgrade React from b1533b03-20260203 to 3e00319b-20260203: #89449
• Rename CACHE_ONE_YEAR for clarity and fix usage: #89450
• [Codemod] Fix agents-md on Windows: #89319
• Experimental deferred entries handling: #88347

Misc Changes

• Snippet multi package syntax: #89381
• TURBOPACK: support chunk_loading_global method: #88790

Credits

Huge thanks to @icyJoseph, @mischnic, @ijjk, @fireairforce, and @gaojude for helping!

Core Changes

• Turbopack: FreeVarReference::ReportUsage: #89302
• Make Server Function logging opt-in via logging.serverFunctions: #89321
• Restore default-enabled Server Function logging: #89407
• Re-add build-complete traces for webpack: #89402
• Skip Server Function logging for 'use cache' functions: #89408

Misc Changes

• Turbopack: Move PrettyPrintError to turbo_tasks and add tests: #89280
• Update Rspack production test manifest: #89372
• Update Rspack development test manifest: #89371
• docs: replace 'can not' with 'cannot': #89354
• docs: Fix custom server code snippets: #89400

Credits

Huge thanks to @sokra, @mischnic, @unstubbable, @vercel-release-bot, @pavan-sh, @amannn, and @ijjk for helping!

Core Changes

• Turbopack: Rename crates/napi to crates/next-napi-bindings and update crate name: #89314
• feat: detect @typescript/native-preview as alternative TypeScript compiler: #89149
• Revert "Fix/zlib mem node": #89322

Credits

Huge thanks to @bgw and @Suhaib3100 for helping!

Misc Changes

• Apply server actions transform to node_modules in route handlers: #89316
• [test] Deflake browser-log-forwarding verbose level test suite: #89324

Credits

Huge thanks to @unstubbable for helping!

Core Changes

• Revert "Replace build id in Pages data routes with deployment id (#88959)": #89323

Misc Changes

• Add failing test to deploy-tests-manifest: #89318

Credits

Huge thanks to @ijjk and @mischnic for helping!

Core Changes

• Fix/zlib mem node: #89099

Misc Changes

• Update Rspack development test manifest: #89278
• Update Rspack production test manifest: #89277
• Improve consistency of how Flag typed fields are handled in the macro to more structurally prevent bugs like what was fixed in #89228: #89255

Credits

Huge thanks to @naaa760, @vercel-release-bot, and @lukesandberg for helping!

Core Changes

• Improve lock dir error message: #89119
• Ensures browserslist doesn't issue outdated warnings for baseline-browser-mapping: #89287
• Replace build id in Pages data routes with deployment id: #88959
• Upgrade React from 230772f9-20260128 to da641178-20260129: #89301
• Inline handler dependencies instead of tracing: #89269
• Turbopack: add rules.*.type config to allow changing the type of a module: #88788
• Add experimental.varyParams feature flag: #89307

Misc Changes

• Turbopack: improve print_cache_item_size: #89279

Credits

Huge thanks to @huozhi, @eps1lon, @mischnic, @ijjk, @sokra, and @acdlite for helping!