Before that patch 2nd gpu will drop to 0% load for 1/2 a sec once every 4-5 mins which would result in frame rate dropping down to 60-70fps.
After patch that problem is fixed.
Brightness problem has been fixed, It does default to 100% any more when setting mantle.
Contrast still looks a little bit out tho.
There still ment to be even more optimisations for the 7XXX series cards but I dont see how when im already getting 30-40FPS more on average over directX.