📝 Update release notes

docs/en/docs/release-notes.md

@@ -2,6 +2,7 @@
 
 ## Latest Changes
 
+* ✨ Improve type annotations, add support for mypy --strict, internally and for external packages. PR [#2547](https://github.com/tiangolo/fastapi/pull/2547) by [@tiangolo](https://github.com/tiangolo).
 * 📝 Update Uvicorn installation instructions to use uvicorn[standard] (includes uvloop). PR [#2543](https://github.com/tiangolo/fastapi/pull/2543) by [@tiangolo](https://github.com/tiangolo).
 * 🌐 Add docs lang selector widget. PR [#2542](https://github.com/tiangolo/fastapi/pull/2542) by [@tiangolo](https://github.com/tiangolo).
 * 🐛 Fix docs overrides directory for translations. PR [#2541](https://github.com/tiangolo/fastapi/pull/2541) by [@tiangolo](https://github.com/tiangolo).