Core Changes

• [middleware]: add upper bound to cloneBodyStream: #84539
• Remove automatic linting from build: #83136
• Re-enable legacyBehavior and passHref on Link: #84500
• [cna] Use stable React Compiler: #84660
• Add codemod for middleware to proxy: #84127
• Fix dynamic catchall parameter interpolation in parallel routes: #84279
• feat(breaking): Hard Deprecate PPR Configuration: #84280
• Deprecate middleware and recommend proxy: #84119
• Put native TS resolver for next config under --experimental-next-config-strip-types flag: #84675
• Fix interception route rewrites for nested dynamic routes: #84413
• fix: strip NEXTSEP from interpolated pathnames: #84430
• chore: Remove useless symlink resolution logic in recursive-delete.js: #84582

Misc Changes

• docs: update core documentation for Turbopack as default bundler: #84282
• Update Rspack development test manifest: #84631
• [turbopack] Only send the filesystem caching timing messages for slow events: #84646
• docs: experimental.isolatedDevBuild: #84656
• docs: add note clarifying project root in monorepo: #84628
• Fix flakey overlay feedback test: #84662
• [ci]: update flake detection to only run in Turbopack: #84659
• [ci]: move router-act to top level testing utils: #84653
• [tests]: de-flake client-cache.parallel-routes.test.ts: #84655
• [create-next-app]: add eslint to default template: #84661
• Update Rspack production test manifest: #84630
• [test] Assert on stable error codes: #84671
• Turbopack: convert HashMap to IndexMap for deterministic tasks: #84641

Credits

Huge thanks to @lukesandberg, @vercel-release-bot, @ztanner, @devjiwonchoi, @gwkline, @ijjk, @bgub, @samselikoff, @eps1lon, @wyattjoh, @bgw, and @sokra for helping!