From IGN.com
What could possibly make Batman: Arkham City a better game? Did you say PhysX effects? You probably didn't, but if you're planning on waiting for the PC version to come out in November, you should check out the footage Nvidia released of Rocksteady's latest game. You'll see comparison shots between the game running with PhysX on (running a GTX 560) and off (on an 8800 GT).
Provided you have the proper hardware, the PC version will also allow for DirectX 11 tessellation, which you can check out in the screenshot of Catwoman below. More detail is provided in Nvidia's PC version preview article.
So what does everyone think, I havnt go it on console yet since I pre-ordered it on PC.
The Games for Windows version of Rocksteady's highly-rated sequel will be out on November 15, 2011.