DHHの
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によるとRails-2.2.2がリリースされた模様です。

pre>>
% gem search -r rails
(snip)
rails (2.2.2)
(snip)
<<--

Rails 2.2: i18n, HTTP validators, thread safety, JRuby/1.9 compatibility, docs

Rails 2.2 is finally done after we cleared the last issues from the release candidate program. This release contains an long list of fixes, improvements, and additions that’ll make everything Rails smoother and better, but we also have a number of star player features to parade this time.