Cataclysm Dungeon Overview

At launch, World of Warcraft: Cataclysm will ship with eight 5-man dungeons and two heroic versions of old-world dungeons.

Grim Batol: One level 85 5-man.
Skywall: One level 80-82 5-man.
Abyssal Maw: Two 5-mans; level 80-83 and level 82-84.
Deepholm: One level 80-83 5-man.
Uldum: Two 5-mans; level 83-84 and level 85.
Blackrock Caverns: One level 85 5-man.
Shadowfang Keep: One level 85 heroic 5-man.
The Deadmines: One level 85 heroic 5-man.