## Ruby 4.1.0-preview1 Released

- 種別: release
- 関連技術: ruby
- 公開日時: 2026-10-12T00:00:00.000Z
- 情報源: Ruby News (https://www.ruby-lang.org/en/news/2026/10/12/ruby-4-1-0-preview1-released/)
- パーマリンク: https://vulnpulse.app/items/ruby-news-7d4dc0afa8b3

We are pleased to announce the release of Ruby 4.1.0-preview1. Ruby 4.1 introduces Ractor local GC, Windows support of YJIT, autoload_relative, and adds many improvements. Ractor improvements A lot of work has gone into making Ractors more stable, performant, and usable. These improvements bring Ractor implementation closer to leaving experimental status. The default GC now runs per Ractor : each Ractor collects its own heap on its own thread without stopping the others, and a stop-the-world collection only runs when it is really needed (explicit full GC.start , shareable-object growth, recla…