Yes, the World of Warcraft: Cataclysm intro cinematic has been released. It weighs in at 2 minutes, focuses on Deathwing and can be found after the jump. The world heaves with his torment! Its wretched kingdoms quake beneath his rage! All will burn beneath the shadow of his wings! It looks like Deathwing is a very grumpy dragon. Who knew?
Tell you what you shouldn't do directly after watching this incredibly expensive bit of drama. You shouldn't watch a YouTube video of an actual WoW boss fight. I think that might be a bad idea.
And look, here's an example of an actual WoW boss fight video that I was saying you probably shouldn't watch. Because that might be a bad idea.
EDIT: Tim Edwards, Editor of PC GAMER MAGAZINE, UK, has gotten in touch to tell me that the above video is not at all representative of a proper WoW boss fight. He gives me this instead:
Apologies if anybody feels that they were misled.