ROS 1.1.3 has been released. This is an *unstable* release to test new features for ROS. It is into the "latest" distro.
The only change is a patch to rosmake to allow it to work in a read only system install. http://www.ros.org/wiki/ROS/ChangeList/1.1#A1.1.3_.282010-04-16.29
-- your friendly neighborhood ROS team