Halo is planned for a 2010 release by Twentieth Century-Fox.
Action / Adventure / Mystery / Sci-Fi / Thriller
Just like any film in development, whether it goes through or not, no one can say at this point.
Summary: After they crash-land on an artificial ring-world called "Halo", a navy captain, his surviving marines, and a chemically-and-surgically-enhanced supersoldier named John-117 "Master Chief" must find out what the Covenant, the genocidal alien race they are at war with, are looking for on the ring. However, Halo holds more secrets than either side imagined.
No cast, no script, no producers.