Halo will hit the silver screen in summer 2008, not 2007, Microsoft announced this week - and relative unknown Neill Blomkamp will direct.
South African Blomkamp has worked on a number of visual effects for television shows including Stargate SG-1, Dark Angel and Smallville, and has also worked on a number of advertising campaigns.
Microsoft describes him as "one of the most innovative and original artists currently working in short films and commercial advertising".
His work has netted him three Clio Awards for ad work, and a Visual Effects Society Award for a TV ad about a dancing Citroen.
Along with Blomkamp, the Halo film has attracted Academy Award-winning film-maker Peter Jackson and his partner Fran Walsh as executive producers, with Jackson's Weta Digital and Weta Workshop handling effects and costumes. The film will be shot in New Zealand.