- Added route groups (parentheses/brackets directories) and custom prefetch triggers for NuxtLink, plus server component islands can now manipulate head metadata.
- Introduced new module author utilities (isNuxtMajorVersion, defineNuxtModule().with) and improved dev warnings; server source maps now reference original source files.
- Updated Vue type augmentations, which may break libraries that augment @vue/runtime‑core, and delivered numerous performance enhancements and bug fixes.