>> On Fri, Mar 15, 2013 at 8:37 PM, Tully Foote <tfoote@osrfoundation.org>
>> wrote:
>> > This marks the first hydro packages released.  We already have 87
>> > packages
>> > for precise and quantal.  See below for the list.  If your dependencies
>> > are
>> > met you should think about releasing soon.

Everyone working with Hydro, will probably need to update their rosdep sources:

 $ sudo rm /etc/ros/rosdep/sources.list.d/20-default.list
 $ sudo rosdep init
 $ rosdep update

See this question for more details:

 http://answers.ros.org/question/58350/could-not-resolve-rosdep-key-message_generation/
--
 joq