I'm surprised this hasn't been put on the forums yet.
http://en.wikipedia.org/wiki/Prometheus_(film)
Personal opinion, I have both hopes and doubts about it. My hopes is that Ridley Scott will do good things with this prequel, that I finally get to see space jockey's in action, and that the new alien design will be scary as hell. I want to be cringing in my seat from suspenseful horror if it goes just right. Now my doubts. There's been a flood of prequels, sequels, remakes, and generally unoriginal ideas coming out in 2011 and 2012 from Hollywood that it's getting pretty sickening. Prometheus would be on that list following a tiresome list of bad sequels and crossovers. It may not even be a rated-R film by the time of release either since Scott is doing both R and PG13 cuts. It's going to be a major buzzkill if it was released as a PG13 film and then the R-rated cuts were saved to DVD - I want my violence and gore in the dark, foreboding theatre, damnit! Anyways, that's my two cents.