World of Warcraft: Cataclysm - Patch 4.2: Rage of the Firelands Trailer

Across the breadth of Azeroth, the Horde and the Alliance have dealt crushing blows to Deathwing's elemental minions and fanatic Twilight's Hammer cultists. Through it all, the Earthen Ring has never wavered from its tireless charge, holding Azeroth itself together amid the tidal fury and errant magical energies that churn at the Maelstrom. Yet as the elements continue their chaotic upheaval, it seems that the noble shamanic order might finally be on the verge of breaking beneath the great weight that rests on its shoulders. Even Thrall, for all of his wisdom and skill, has grown aggravated by his failure to effectively communicate with Azeroth's elements. Recently, his calls were acknowledged, but the malevolent entity that responded has only intensified Thrall's fears and doubts....
This is the official trailer for World of Warcraft patch 4.2: Rage of the Firelands.