Our good friends at Moviehole.net have confirmed that visual FX work on the Alien Prequels have begun. The films will be shot in 3D and set 35-50 years before Alien when the Wayland Yutani Corporation starts terraforming planets. Sir Ridley Scott is directing and the films will also feature the origins of the Aliens, and focus heavily on the race pictured here.
Look for the first film in late 2011.