At Dive Into Mobile, Andy Rubin demostrated Android 3.0 (Honeycomb) running on a prototype MOTOPAD.
"First thing to note is a new lock screen and then what appeared to be a brand new "desktop" with widgets and buttons in the corners. Different UI aesthetic than earlier versions of Android. He then launched the new, 3D-and-vector-based version of Google Maps that should be coming to your phone in just a couple days.
Honeycomb will be out "next year," there's a new app grid and Gmail appears to have gotten a much nicer version of itself.
The tablet itself looks over 7-inch at 16:10.