20th Century Fox has now uploaded the new trailer that just aired on Channel 4 to Youtube. It’s not HD but I reckon it’ll only be a matter of time before it appears on iTunes. There’s quite a few new shots in there which you can find in the forum, courtesy of Cvalda. We get a lot of the backstory in the film as well as a good look at the snake-like creature.
Thanks to predxeno and antovolk for the link.