Last week, after an extended beta-testing period, the Ruby on Rails team finally released Rails 3.0. Earlier this year, I blogged about a few of the coolest new features in Rails 3: a new package dependency manager called Bundler, a reworking of the ActiveRecord query syntax, and a brand-new routing system.
Have a look at the official announcement on the Rails blog, and check out a series of screencasts released under the rubric Dive into Rails 3 for even more details.
Itching to get started? As always, update or install with
gem install rails, or check out the download page for full installation instructions.