Rails 4.0: Final version released
It's always an uphill battle for us (Addison Wesley Professional Ruby Series) to get official recognition from DHH since we're not part of the pragprog clique.The latest rewrite of my book for Rails 4 is available at http://leanpub.com/tr4wMichael Hartl's Rails Tutorial has also been fully updated. See http://news.railstutorial.org/ruby-on-rails-tutorial-rails-4... for all links to relevant material.