Wrath of the Lich King - Patch 3.3: Fall of the Lich King

This is the official trailer for patch 3.3: Fall of the Lich King. The original description for the content featured in this patch is below. The full patch overview can be found here:
ICECROWN CITADEL: THE FROZEN HALLS
Looming over the stark wastes of Northrend, Icecrown Citadel awaits those who would see the Lich King and his Scourge brought low and the threat they pose wiped from the face of Azeroth. The heroes who venture within will face some of the greatest horrors yet seen. But before you burst into the front gate of the citadel, an alternate means of entry beckons. Journey through three separate wings of the new five-player dungeon, Icecrown Citadel: The Frozen Halls, and follow Jaina Proudmoore or Sylvanas Windrunner into the Lich King's domain.
ICECROWN CITADEL: THE FROZEN THRONE
All across Northrend, many battles have been fought against the vile Scourge. Countless lives have been lost since the Alliance and the Horde first reached these frozen wastes, but the champions of Azeroth continue to march forward -- and Icecrown Citadel, the cornerstone of the Scourge's power and the home base of the Lich King, is their final target. Tirion Fordring and the Argent Crusade have forged an accord with Darion Mograine and the Knights of the Ebon Blade to form the Ashen Verdict. This coalition's strongest combatants, along with the champions of the Alliance and the Horde, will lead the charge against the citadel. In the new Icecrown Citadel raid dungeon, Azeroth's mightiest will face terrifying challenges before ascending to the Frozen Throne, where the Lich King and his runeblade, Frostmourne, await to deliver the heroes to their deaths....