v15.4.0-canary.1

Core Changes

• fix: handle incremental PPR with client segment cache: #78387

Misc Changes

• refactor(turbopack): Remove needless code: #78331

Credits

Huge thanks to @wyattjoh and @kdy1 for helping!

v15.4.0-canary.0

Core Changes

• Add onInvalidate option to router.prefetch: #77880
• Reserve bandwidth for most recently hovered link : #78362

Misc Changes

• docs: improve userAgent device.type example in userAgent.mdx: #78368
• fix(turbo-tasks): Make vc types use repr(transparent): #78327

Credits

Huge thanks to @acdlite, @sqidermad, and @bgw for helping!

v15.3.1-canary.15

Core Changes

• [Turbopack] refactor persistent caching from log based to cow approach: #76234

Misc Changes

• fix(turbo-tasks-fs): Handle filesystem watcher rescan events: #78045

Credits

Huge thanks to @bgw and @sokra for helping!

v15.3.1-canary.14

Core Changes

• Add graceful error boundary for bots requests: #78298
• make sure eslint-plugin-next is built when running 'pnpm dev': #78305
• Migrate pages API routes to handler interface: #78166
• Update middleware public/static matching: #78325
• Fix dynamic route param encoding: #78326

Misc Changes

• fix(turbopack): Fix duplicate modules when tree shaking: true: #78203
• test: try to fix flakiness in amphtml util: #78304
• remove BrowserInterface: #78308

Credits

Huge thanks to @kdy1, @huozhi, @lubieowoce, and @ijjk for helping!

v15.3.1

Note

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

Core Changes

• chore: Backport SWC-based RC optimization (#78260)
• fix: bump image-size@1.2.1 (#78164)

Credits

Huge thanks to @kdy1 and @styfle for helping!

v15.3.1-canary.13

Core Changes

• @next/mdx: Use stable turbopack config options: #78261
• Upgrade React from b04254fd-20250415 to 4a36d3ea-20250416: #78297

Misc Changes

• Turbopack: fix duplicate unsupported edge import modules: #78236
• Turbopack: Include Next.js version in panic handler report: #78263

Credits

Huge thanks to @wbinnssmith and @mischnic for helping!

v15.3.1-canary.12

Core Changes

• fix: alternate bundler support for dropping client pages in AMP: #77601
• [errors] refactor default global-error into a separate file: #78182
• [metadata] render streaming metadata on the top level: #77620
• [metadata] skip head cache in default slot: #78206

Misc Changes

• Docs IA 2.0: Move Production Checklist under Guides: #78240
• Docs: Fix nav item lettercasing for multi-zones: #78250
• [docs] fix function signature of og image: #78277
• Turbopack: dedupe additional traced references: #78241
• Update Turbopack development test manifest: #78274
• [test] Improve coverage for fetch errors in Edge runtime: #78257
• Update Turbopack production test manifest: #78273

Credits

Huge thanks to @delbaoliveira, @ScriptedAlchemy, @huozhi, @mischnic, and @eps1lon for helping!

v15.3.1-canary.11

Core Changes

• Preserve slashes when custom URL schemes are used in redirects: #78176
• ignore-list published sources if they have a sourcemap: #78242
• Upgrade React from 1d6c8168-20250411 to 39cad7af-20250411: #78152
• Turbopack: add test case for persistent caching: #77030
• Upgrade React from 39cad7af-20250411 to b04254fd-20250415: #78253

Misc Changes

• Turbopack: Support ECMAScript styleregex with negative lookahead in require.context calls: #78251

Credits

Huge thanks to @eps1lon, @sokra, and @lukesandberg for helping!

v15.3.1-canary.10

Core Changes

• [dev-overlay] Add dedicated label for recoverable errors: #78186
• [chore] remove unused __NEXT_PRIVATE_RUNTIME_TYPE: #78230

Misc Changes

• [docs] Update 03-fonts.mdx: #77965
• Turbopack Persistent Caching: Use SmallVec to avoid allocations for small values written to DB: #78136
• Turbopack: wait for tracing to be written before exiting: #78210
• refactor(turbopack): Prepare removal of fake AST in tree-shaking: #78172
• Turbopack: more module ident collisions: #78207
• fix(turbo-tasks-fs): Update notify-rs, handle recursive symlinks in realpath implementation, add an e2e test for symlinked files: #78220
• Update Turbopack production test manifest: #78224
• Update Turbopack development test manifest: #78225
• Turbopack: normalize ref type for external tracing: #78226
• Update Rspack production test manifest: #78222
• Getting Started Docs: Add deploying page: #77720
• Docs IA 2.0: Move multi-zones docs to Guides: #78238
• Turbopack: Do multiple unit test runs: #78212
• Turbopack: fix cell not found bug: #78246
• Prevent typescript errors in IDE for newly generated tests: #78247

Credits

Huge thanks to @praizjosh, @sokra, @kdy1, @mischnic, @eps1lon, @bgw, @huozhi, @delbaoliveira, and @unstubbable for helping!

v15.3.1-canary.9

Core Changes

• [dev-overlay] Stop squashing hydration related errors in App Router: #78140
• [test] Enable strictNullChecks in test utils: #78142
• Document Turbopack trace viewer: #78184
• [dev-overlay] Fix error dialog resizing logic: #78144
• Include types in published eslint-plugin-next: #78109
• [dev-overlay] Stop appending wrong Owner Stacks to SSR-only shell errors: #77302

Misc Changes

• [test] Assert on all errors in app/ hydration-error suite: #78132
• Skip failing test via manifest instead: #78161
• Update Turbopack development test manifest: #78179
• Correct require.context relative import keys to match Webpack: #78148
• Getting Started Docs: Clean up docs/app and docs/pages pages: #78151
• Update Rspack production test manifest: #78177
• Update Turbopack production test manifest: #78180
• Update Rspack development test manifest: #78178
• Turbopack: fix duplicate facade module: #78191
• Added @types/jest in installtion commands.: #78090
• Update turbopack.mdx: #78082
• docs: improve wording around NextRequest and query params: #77923
• Docs IA 2.0: Move version upgrade docs under Guides: #78189
• Docs IA 2.0: Move SPA docs under Guides: #78195
• Docs IA 2.0: Move migration docs under Guides: #78193
• Docs Papercuts: #78200
• feat(turbo-tasks): Generate a trace of transient tasks when panicking: #77600
• Turbopack: fix duplicate module from internal ref: #78194
• Fix externals doc validation: #78208

Credits

Huge thanks to @eps1lon, @mischnic, @Cy-Tek, @delbaoliveira, @timneutkens, @raunofreiberg, @devchaudhary24k, @Neschadin, @OreQr, @drewlong314, @bgw, and @ijjk for helping!