Summary
Blizzard's dungeon video says 9 new dungeons at launch and highlights three: Hall of Thanes (under the Ironforge Throne Room, first Alliance dungeon, Dark Iron Dwarves), Ruins of Lordaeron (Undercity topside, new lighting) and Excavation Site: Wetlands (around level 30). Experience, boss loot and quest rewards of older dungeons were also reworked.