Gin v1.11.0 introduces HTTP/3 support via quic-go, new binding features (including unixMilli/unixMicro and BindPlain), enhanced form handling with default values and array formats, improved context methods for native Go types and cookies, custom JSON codec support, numerous bug fixes, dependency updates, Go 1.21+ requirement, and various performance, refactor, documentation, and CI improvements.

Flask 3.1.2 is a bugfix release addressing issues with async views, test client session state after redirects, and type hints for send_file, without introducing breaking changes.