Ruby 3.4 has been released and adds “it” block parameter reference, changes Prism as default parser, adds Happy Eyeballs version 2 support to socket library, improves YJIT, adds Modular Garbage Collector, updates Core classes and the Standard Library, and more.
https://alternativeto.net/news/2024/12/ruby-3-4-released-with-it--prism-as-default-parser-improved-yjit-modular-gc-and-more/