If these photos are real, it looks like the next generation of windows mobile will have deep support gesture based controls. If done properly (a trigger button, perhaps?) I think this could be a great step forwards.
Hold your cell phone and imagine yourself flicking down a list of contacts. A quick flick down or up moves you to your prev/next contacts, and a harder flick scrolls you through long lists until you lift up again.
Come to think of it, that kind of control could be awesome for music playback. Zune 3, anyone?