During the Dungeons & Raids panel, Tigole mistakenly reveals the next 25-man instance (and the last to appear before the nex expansion. It supposedly connects the lore between Outlands and Northrend. It consists of 6 bosses and contains loot better than the Black Temple or Mount Hyjal. It is unknown as of now whether a tier 7 will appear or if the loot should simply be individual pieces.