Rails 1.2: Release Candidate 1
We can't swear that Ruby and Rails really are the state-of-the-art in Web 2.0 ajaxy goodness. But Rails does seem to ride the edge in some domains. Either way, the new release features REST (REpresentational State Transfer). Well, if you are interested, follow the links, Google on, and get a copy of the new Agile Web Development with Rails.