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.
Ruby 4.1.0-preview1 Released
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October 12, 2026
domain
ruby