YouTube user "TheNotebookGamer" uploaded the video showing Crysis 2 running in DirectX 11 mode with all the eye candy cranked up to the max. The most interesting part isn’t the fact that the demos run smoothly and offered very good gameplay, but rather the fact that it runs on an unreleased NVIDIA GPU.
Given that the name of YouTube user is "TheNotebookGamer", one might expect that the user is probably referring to an unreleased notebook graphics card. Given that couple of days ago, site Drivers.DownloadAtoZ ran a story on successor of GeForce GTX 460M being named GTX 580M, it just might be that processor.
According to the story, the GTX 580M could feature "256-bit 2GB GDDR5 memory, MXM 3.0 Type B interface, PhysX/CUDA tech, HDMI 1.4a output and DX11."
Your guess is as good as ours, but in meanwhile, you can take a look at this interesting video: