In addition to the Nozdormu mortal form, Wowhead News also has models of the new Raven Lord "on fire" version, a more complete version of Majordomo Fandral Staghelm's Druids of the Flame, some 3-D renders of the new "overfiend" enemy from the Firelands (who looks like a baby version of Baleroc), and a human spread out like Bolvar chained up above the Lich King before Tirion bought him that cool new hat.
Another interesting tidbit from this PTR update is the updated model of Sulfuras, which now has nicer textures and more polygons but still retains a healthy bit of the cool factor the original Sulfuras did. One thing is definitely for sure -- Blizzard wanted to make the new Sulfuras very reminiscent of the old Sulfuras but updated, keeping the weapon's heart and soul. To me, the new Sulfuras is a good metaphor for Cataclysm itself.
The news is already rolling out for the upcoming WoW Patch 4.2! Preview the new Firelands raid, marvel at the new legendary staff, and get the inside scoop on new quest hubs -- plus new Tier 12 armor!