Hi,
I am happy to announce that Ruby on Rails 4.0 has landed in Fedora Rawhide[1].
If you have any packages that depends on Rails, it's a good time to test them.
Note: Some dependent RubyGems were updated afterwards to support the newest version of
Rails[2], some not.
Regards
Josef
[1]
https://fedoraproject.org/wiki/Changes/Ruby_on_Rails_4.0
[2]
https://fedoraproject.org/wiki/Changes/Ruby_on_Rails_4.0#Dependencies