What is RubyMine 3
RubyMine 3.0 is the latest release of RubyMine. It includes Rails 3 support and a number of other new features.
RC Downloads | What's New
Windows installer (includes bundled JRE 1.6.0_21
Mac OS X installer
This EAP build requires a valid RubyMine 3.0 license. If you haven't used your evaluation of RubyMine 3.0, you can evaluate this version for free for 30 days.
RubyMine EAP Release Notes