By default, we do not upgrade customer's Rails applications to newer releases of Rails.  We have noticed that a large number of customers haven't been upgrading, and just want to make sure that customers know how to do so!

Simply edit your application's config/environment.rb as such to specify the version you would like to upgrade to:
-RAILS_GEM_VERSION = '1.1.6'

+RAILS_GEM_VERSION = '2.1.1'

Then, run 'rake rails:update' from with in your application's directory.


Notable upgrades for you would be:
 1.2.0
 1.2.6
 2.0.0
 2.0.4
 2.1.0
 2.1.1

Other versions can be available as well, but these are the earliest and latest point-releases available within each major release at the time of this writing.