- Breaking change – Turbopack build support removed; use Webpack via pnpm build for Next.js 15/16.
- Added type‑safe augmentable interfaces for collection and global custom properties, payloadInstanceCacheKey for multi‑tenant endpoints, MongoDB connection lifecycle hooks, and MCP localization plus PayloadRequest injection.
- Fixed many bugs (auth, UI, DB, race conditions) and introduced a ~5000% faster permissions calculation; updated docs for draft/status handling, MCP usage, imports, and UI best practices.