I played with one today, and despite the reality of the above photos, the thing feels damn big. Lighter and thinner than a 1000 (the only one I've ever held), but big. The screen is the size of my iPhone (not its screen, the whole phone), and it's absolutely beautiful. Bright, excellent colors, high-rez -- beautiful.
I played a little bit of Uncharted (I'm the only human in the world who doesn't like the Uncharted series), and it felt very much like the other ones. The touch control took a little getting used to, but I may actually like it better than the normal jump mechanism.
Little Deviants was kind of fun in a my-kid-would-really-like-this way, but switching the tapping from front to back was not easy, because of the (sorry) size of the unit. (My hands are quite small.)
Whatever that Japanese thing with the cat that controls gravity was . . . that was strange, but probably my favorite of the three.
I can't wait to see Disgaea 3 on this.