Precise Pangola has been released and a day later comes a new fglrx driver. While there isn’t a changelog, this build apparently gives us:
early-look support for Ubuntu 12.04, Linux PowerXpress support for the Intel Ivy Bridge platform, packaging script updates, and various bug-fixes.
Among the bug-fixes for Catalyst 12.4 on Linux are: fixing some multi-head issues, a system hang in certain PowerXpress configurations, fixing a system hang when using OpenGL overlays, correcting an OpenGL performance drop, a soft-hang when killing the X Server, and severe corruption for OpenGL games using the AMD “Redwood” graphics processors.
If you want to build these for yourself then you can follow these instructions: