The attached image is at a possibly deceptive angle, but it almost appears as though the glass is ever so slightly inset, buffered slightly by some sort of bumpers. In one of the early releases of the press renders, it also looked somewhat apparent on the white faced version, though the most recent press renders seem like maybe they tweaked the lighting to reduce how much the edge stands out.
Stylistically, the blogosphere has preferred the chic-ness of unbroken planes of glass for phones and tablets, but in terms of durability, inset screens are fantastic. Witness the following test between the Nook Tablet and Kindle Fire, the former with an inset screen and no gorilla glass, the latter with gorilla glass and a more exposed glass surface. The kindle shatters (check out ebay, and you'll lots of other GG packing phones busted) on a face down drop but the Nook doesn't.