I can also comfirm bluray playback on Ati:
-win7 64 bits
-Dad's Panasonic 3d plasma 2010 model
-using $5 hdmi 1.4 cable...have not tried hdmi 1.3...
PowerDVD 11 + AnyDVD to bypass encryption?..
tested 20+ versions of 3D from mkv sbs to original 3d iso and 3d movies from bluray folder...all works great using Ati Hd5770. (originally I thought I had to change to Nvidia or upgrade to Hd6xxx card).
Have not tested 3d games yet...but will in the next coming weeks...