Core Changes

• Rewrite instant validation to use depth-based URL boundary discovery: #90905
• Add experimental.cachedNavigations feature flag: #90928
• preserve allowQuery for partial fallback shells: #90887
• Cache runtime data for partially static pages on initial load (resume): #90888
• re-introduce partial fallback -> route upgrading: #89063
• fix: Don't fall through to catch-all when static child subtree doesn't match: #90957

Misc Changes

• Turbopack: CompileTimeDefineValue numbers and regex: #90934
• Turbopack: pass reference type to CustomModuleType: #90814
• Fix preview version in window.next.version for PR builds: #90937
• docs: explain deploy test custom scripts: #90966
• [Evals] Standardize Evals in Next.js: #90883
• TURBOPACK: alias resolve lost query param: #88891

Credits

Huge thanks to @gnoff, @mischnic, @unstubbable, @ijjk, @ztanner, @gaojude, @fireairforce, and @acdlite for helping!