ATI released what seems to be a very rushed beta driver today. The new driver is ATI Catalyst 10.7a beta driver for Windows 7, Windows Vista and Windows XP.
This update brings Anti-Aliasing support (which must be enabled through the ATI Catalyst Control Center) for StarCraft II, as well as a performance enhancement for Eyefinity users running with Quad ATI CrossFireX™ configurations.
The results of this dtriver seem to be very flakey judging from the results, experiences and feedback in our forums. We have a dedicated thread on this driver right here. You can download the driver right here.