Looks like the Nexus 7 is sporting Corning's Gorilla Glass. From Google's website:
This should make a lot of people happy.
Stunning 7” display
Nexus 7 brings your entertainment to life in stunning clarity on a vibrant 1280-by-800 high-resolution display protected by scratch resistant Corning? glass. With over one million pixels in your hand, text is sharper, HD movies are more vivid and gameplay is smooth and dynamic.
This should make a lot of people happy.