It looks like some good things are happening with this driver release. I have it installed, though I haven't tested many games... I've only played Mass Effect 2 and Duke Nukem Forever since installing them.
As we roll into the halfway mark for 2011, we see the latest iterations of the Catalyst drivers from AMD come in the form of the Catalyst 11.6. A little earlier than expected, the latest drivers seem to bring some nice features to the table as well as some promises of extra performance.
Tweaktown has the review.