Blizzcon 09: Debut WoW Cataclysm trailer is live By Johnny Cullen, Friday, 21 August 2009 21:14 GMT Share on: Facebook Twitter Reddit Google+ Blizzard’s put live the debut trailer of the new World of Warcraft expansion, Cataclysm. You can find it through here. That’s if the site isn’t getting battered to death anyways. It was just announced tonight. The first screens are here.