According to an interview with Assassin's Creed 2 3D Lead Programmer David Champagne the upcoming Assassin's Creed 2 game will be DirectX 9 game. And although Assassin's Creed is quite a game for physics implementation it will not support Nvidia's PhysX.

While console owners had their share of fun with this game, the PC version was delayed and we quietly hoped that there will be some interesting modifications that were the reason for the delay, but it looks like that Assassin's Creed 2 will be a plain Xbox 360 port. It will support much higher resolutions that the console version and multi-sampling modes up to 8x while the console version is limited to 2x.

Although the game run smooth on both DirectX 10 and DirectX 11 systems, there will be no visualization differences and improvements over DirectX 9 hardware. According to David Champagne, until the Steam HW Survey numbers change, they still don't see a point in changing to DirectX 11, but we guess that once Nvidia jumps on the DX 11 bandwagon, things might change.

The game should be available sometime in March and you can find the full interview here.