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 types and cookies, custom JSON codec support, and numerous bug fixes, dependency updates, performance optimizations, and documentation improvements.

Flask 3.1.2 is a bugfix release addressing issues with async view context streaming, test client session state after redirects, and type hints for bytes IO in send_file—no breaking changes introduced.