This release uses WebSocket 2.0 API, but it is a step towards the Jakarta EE 10:
- JDK 8 support has been dropped and JDK 11 is the minimum supported JDK version
- Contains JPMS support (module-info)
- OSGi headers are compatible with Jakarta EE 10 APIs
- Contains the implementation of WebSocket 2.1 features in the WebSocket API up to the release date (other new features can become part of WebSocket 2.1 API after this release, though - Tyrus 2.1.0 will follow to implement those new features)