Core Changes

• Fix subtree layout alignment for route summary in next build: #85137
• [codemod] Remove runtime config when running middleware-to-proxy: #85075
• [turbopack] Improve the multiple bundler flags messge to note that perhaps your package.json is the problem: #85118
• Add Learn more docs to Middleware deprecation warning: #84711
• [BF Cache]: skip lazyData fetch logic for inactive segments: #85142
• Pass startTime to initial RSC payload stream: #85144
• guard navigation use hooks for React 18: #85151
• [turbopack] Don't warn on the lightning css experimental option: #84913
• Turbopack: Remove redundant log line, increase delay for compiling log message: #85133
• Make params and searchParams new Promises: #85158
• Name "cache" streams for React DevTools: #85159
• Use cacheMaxMemorySize config in default cache handler: #85153
• Omit params to from client segments: #84883
• enable experimental.routerBfCache behind cacheComponents: #84923
• [Cache Components] Allow stale longer than expire in cacheLife: #85115
• Update Activity names given to routes: #85155
• use port zero for --inspect when forking, if used by parent: #85128
• Update blocking prerender error message: #85087

Misc Changes

• Turbopack: Disable LightningCSS MediaRangeSyntax feature: #85086
• Don't expliclitly set the --turbopack flag in Create Next App, it is no longer necessary: #85117
• [turbopack] Remove the canary icon from the cache components docs: #85149
• Bump swc to v45: #85143
• [test] Fix test-dev with --projects: #85167
• [test] Update snapshots: #85171
• docs: mcp: #85010

Credits

Huge thanks to @eps1lon, @devjiwonchoi, @lukesandberg, @timneutkens, @ztanner, @acdlite, @mischnic, @bgw, @sebmarkbage, @wyattjoh, @gnoff, @huozhi, and @seeplusplus for helping!