OpenSSL 4.1.0 Release Notes
Summary
OpenSSL 4.1.0 is a feature release that adds substantial functionality, including DTLS 1.3 support and related security protocol enhancements, plus performance-oriented optimizations for specific architectures. It also updates build targets, changes tsget to Net::Curl::Easy, and removes certain targets and configure options. The release documents several known issues affecting DTLS and post-handshake behavior, and lists new features like IKEV2 KDF and Elbrus2000 support.