What's the situation regarding the 64bit executable?

Originally Posted by Buchon

DX11 contain AA processing optimizations, witch mean better performance with AA enabled and use better HDR precision witch mean better HDR lighting.

Also can do high quality shadows processing without performance loss (no aliased shadows)

This is correct, although some here during development thought that DX11 would be a hindrance to performance, it won't it will improve FPS and the graphic detail, If a game is coded correctly in DX10 then applying DX11 shouldn't be a whole big deal, (so I've been told).