ATI / AMD have released the Catalyst 12.1a preview driver, you can obtain the new driver from here:
http://support.amd.com/us/kbarticles/Pages/Catalyst121apreviewdriver.aspx
Release Notes from ATI/AMD are as follows:
The AMD Catalyst™ 12.1a Preview driver includes all of the features found in AMD Catalyst™ 12.1 Preview
Additional changes for upcoming update of Rage
- Resolves some new texture corruption issues introduced by the latest version of the game
- Improved performance ~5%
- Smoother game play and reduces multicore sync points
- Fixed mapbuffer failures when switching maps on 32-bit systems
- Fixed a game crash when switching maps back and forth on 32 and 64bit systems
Happy Gaming 🙂