Yah, hopefully this will mean an industry-wide push to include PPU's on video cards. I always thought that keeping the GPU and PPU separate would mean that you could never rely on hardware for physics being available. If this takes place, we should (hopefully, assuming ATI jumps on the wagon) see some new standards being established. I also noticed that in the XNA "tell us what you want next" survey, physics integration seemed to be a bit of a focus there too.