Icecrown Citadel: The Frozen Throne

Blizzard recently published some new information about the new dungeon, Icecrown Citadel, in their "under development" page:

This dungeon reveals the culminating story events and battles of the Wrath of the Lich King expansion pack. Join the legendary heroes Highlord Tirion Fordring, High Overlord Saurfang, Muradin Bronzebeard, Highlord Darion Mograine, and King Varian Wrynn in an epic battle against the Scourge and their master. Icecrown Citadel features 10- and 25-player versions of the raid dungeon, and each version has 12 encounters. Each encounter can be fought in either normal or Heroic mode, and players can use a new user interface feature to toggle easily between difficulties. The rewards in the raid dungeon start at item level 251 in the normal mode with 10-player encounters, increase to item level 264 in the Heroic mode with 10 players and the normal mode with 25-player encounters, and then finally reach item level 277 in the Heroic mode with 25 players.

This should offer quite the challenge to even hardcore players. Let the race to finish Icecrown Citadel begin!