EBook Now Updated for Rails 3.2 Rails 3.1 and Rails 3.2 introduce many user-facing changes, and this e-book release has been updated to match all the latest changes and new best practices in Rails 3.1 and Rails 3.2. This includes full support for Ruby 1.9.2 hash syntax; incorporation of the new Sprockets 2.0 Asset Pipeline, including SCSS and CoffeeScript; jQuery now being the default; reversible migrations; JSON response support; Rack::Cache, and much more. Please note the Rails 3.2 updates are included only in the ebooks sold by us.