How many new dungeons will be in the expansion?

The first dungeon players will enter is Utgarde Keep, which is intended for five players around level 70. Utgarde is inhabited by the Vrykul, a Viking-like race bent on proving their strength to the Lich King, who will raise the most worthy of their warriors to serve him beyond the grave. We intend to provide a variety of dungeons comparable to that in The Burning Crusade and will be revealing more details about some of these in the months ahead.