Ridley Scott won't have enough room in just one Alien prequel to would solve the mystery behind the infamous Space Jockey and chill us all over again. He's decided there should be two prequels, both of them in 3-D.
While director Scott has been doing his interview rounds for Robin Hood, tons of Alien prequel items have been spilling out of him. The screenplay is now being written by Jon Spaihts, but Scott recently confirmed to Collider that he is hoping to make the prequel a "two-parter." Right now he's focused on merely finishing the first prequel, but he has two movies in mind.
Plus he also confirmed that he would be making the Alien prequels in 3-D — adding to the crush of "event" movies competing for a limited number of 3-D screens.