Hair is nice. Now bring on the other physics effects that are done in crappy Physx only on nvidia hardware. About time Ph will have a serious competition. And please make this available on all cards not just latest AMD's ones.
It's based around the latest Direct Compute API. Unless the graphics card has hardware implemented Direct Compute architecture, it just is not possible i'm afraid. Sounds like this may be a good excuse for you to upgrade ;-)
Instead of using OpenCL_compute_shaders that are platform independent (every card has OpenCL), they using Direct_compute. The "Nokia" of the graphics. As a Linux user i hope that they perish.
Really, seing those pictures did not convince me at all. Some details are well rendered, but others are quite unatural particularly in the first and third examples shown. Have you ever seen hairs being light and floting under heavy rain? It's a nice start, but it still needs improvement. Showing these picts to impress us was a mistake. Still, this could bring a lot to the experience with a little more work!