http://weblog.rubyonrails.org/2010/2/5/rails-3-0-beta-release
Rails 3.0: Release Notes
http://guides.rails.info/3_0_release_notes.html
1.1 Rails 3 requires Ruby 1.8.7+
Rails 3.0 requires Ruby 1.8.7 or higher. Support for all of the previous Ruby versions has been dropped officially and you should upgrade as early as possible. Rails 3.0 is also compatible with Ruby 1.9.2.
参考
「Rails 3.0」のベータ版公開、フレームワーク「Merb」を統合 - ニュース：ITpro
http://itpro.nikkeibp.co.jp/article/NEWS/20100208/344300/
---以下1.9.2の状況---
Ruby1.9.2最新動向インタビュー｜gihyo.jp … 技術評論社
http://gihyo.jp/dev/column/01/prog/2009/121701
↑日本語 ↓English
Latest Developments in Ruby 1.9.2｜gihyo.jp … 技術評論社
http://gihyo.jp/dev/column/01/prog/2010/010801
http://iddy.jp/profile/yugui/
↑わろた↓
http://www.atmarkit.co.jp/news/200907/24/yugui01.jpg
レポート：RubyKaigi2009 スペシャルレポート｜gihyo.jp … 技術評論社
http://gihyo.jp/news/report/01/rubykaigi2009
Ruby 1.9.2のbug trackingの状況
http://redmine.ruby-lang.org/versions/show/11
1.9.2 preview 1は2009/07/20にreleaseされた
http://www.ruby-lang.org/en/news/2009/07/20/ruby-1-9-2-preview-1-released/
1.9.2の特徴
http://www.infoq.com/news/2009/06/ruby192-plans
* improvement of YARV opcode set.[..]
* debugger support[..]
* profiler support[..]
* dtrace support on FreeBSD, OpenSolaris and OSX.[..]
秋頃に変更される前の1.9.2のrelease schedule
http://osdir.com/ml/ruby-core/2009-06/msg00325.html
17 Jul (RubyKaigi2009)
* releases a patch level release of the 1.9.1.
* releases 1.9.2 preview release 1.
25 Aug
* 1.9.2 preview release 2
25 Sep
* 1.9.2 preview release 3
* we aim to freeze the feature of 1.9.2 at the time.
25 Oct
* 1.9.2 Release candidate 1
* 1.9.2 will be in maintenance mode as 1.9.1 is now in.
25 Nov
* 1.9.2 Release candidate 2
25 Dec
* 1.9.2
