These new models for the Gnome, Orc and Dwarf debuted today at the "World of Warcraft: What's Next Panel" at Blizzcon. There'll be an art panel later today with more updated models.
Update: These are shots from the BlizzCon art panel, showing off some of the amazing new facial animations these new models possess. Fahey is in love with the gnome female. See some of the new character models in action here.