Half-Life 2 ep. 3 won't support DX10, let alone DX11, though they (Valve) could possibly add some heavily tweaked up lighting/HDR stuff to the Source & tweak/crank up the overall detail. CryEngine 3 will support DX11 out of box i beleive as it comes out in Q4 2010 i think. Bioshock 2 - further enhanced DX10/water effects & cranked up texture details for models/world but not yet DX11 support. Just Cause 2, Dirt 2, AvP 2010 (AvP3 ?), Bad Company 2, Heaven 2.0 benchmark (obviously), Metro 2033 (from 4A Games/same guys that worked in GSC Game World), Call of Pripyat, Mafia 2 & some more titles names of which i forgot - full DX11 support, in case of Mafia 2 & Just Cause 2 it's also DX11/PhysX support, AvP3 - DX11/ATI EyeFinity (upto 3x1920x1200 displays on one card). Wish that SEGA/Rebellion did patch that enables the DX11/3D Vision Surround support, since the GeForce GTX 480/470 are already out. Diablo 3 & StarCraft 2 - probably minor DX10.1 support, since they focused on polishing gameplay rather then tech stuff. Still they will have to do some eye candy stuff as well, if you ask me.
P.S. Crysis 2, AvP 2010, Call of Pripyat, Metro 2033 & Bioshock 2 - those are the games i crave to see on my system once i'll have either GTX 480 or HD 5870 & Phenom II X6 1090T BE (AMD's high-end 6-core CPU, due April/May 2010).
