As xpris noted:

HI.
In AMD official site i find two new driver:
-Catalyst 12.10 (10.22.2012)
-Catalyst 12.11 beta (10.23.2012)
Any now what's the difference?
http://support.amd.com/us/gpudownloa...2&lang=English
http://phoronix.com/forums/showthrea...236#post293236