Here you can see Rebellion discuss about direct x 11. And also AvP is confirmed to be released supporting direct x 11.
List of games: Direct X 11 Games List
AMD confirms DirectX 11 games: Battleforge, Stalker: Call of Pripyat, Dirt 2 and Alien vs. Predator
ATI Experience Event San Francisco Review
Also if you didnt notice there:

And also another screen I got from avp galaxy:

AMD may launch 5000-series Radeons in September
15.11.2009.
Chris Kingsley, CTO of Rebellion said, “DirectX 11 provides opportunities never exploited before in 3D graphical terms, with features such as the Shader Model 5.0 providing better shadow and depth of field aspects to the game, and also multi-threaded rendering enabling the Aliens Vs. Predator futuristic characters and environments to be realised in exacting detail but with absolutely no frame rate issues. We are confident we will deliver a game the fans have been waiting for and one of which we will be very proud.”
http://www.actiontri...tml?id=102209_4
"DirectX 11 provides opportunities never exploited before in 3D graphical terms, with features such as the Shader Model 5.0 providing better shadow and depth of field aspects to the game,"
http://www.strategyi...d-opportunities
http://www.videogame...directx_11.html
18.11.2009.
Watch and listen to Chris Kingsley from Rebellion talk about their upcoming PC game called AvP and discuss features like tessellation that happens to be found on newer AMD Radeon HD graphics cards
Preview:
























