Blizzard has dropped a pretty little trailer for World of Warcraft: Wrath of the Lich King's patch 3.1. The trailer focuses on the titan city Ulduar and the impending release of Yogg-Saron, the Old God of death imprisoned within the city. It's pure machinima, but it's impressive nonetheless.
Patch 3.1 still has no clear cut release date, but it's apparently coming "soo... er... promptly." The patch is the first large-scale content patch for the Wrath of the Lich King expansion and opens up the Ulduar raid as well as bringing some class changes to the game.