Rails 2.1.1 dispo :
"Rails 2.1.1 is another maintenance release that includes a bunch
of bug fixes and a fix for the REXML vulnerability. I’ve extracted
all the changes from the CHANGELOGs into a single Gist. Enjoy!
To install, just do: gem install rails --version 2.1.1.
Next upcoming release will be Rails 2.2 beta which is quite close."
changelog : http://gist.github.com/8946