Variety reports that Sienna Miller has signed on to “play the film’s female lead, described as a raven-haired baroness and sexy femme fatale skilled in espionage.”
Sienna Miller in Factory Girl.
According to Variety, the film has been given a mid-February start date, and will be released on August 7, 2009. The G.I. Joe synopsis, from the article:
Story is set at Brussels-based GIJOE, an acronym for the Global Integrated Joint Operating Entity, and revolves around an international co-ed force of operatives who use high-tech equipment to battle Cobra, an evil org headed by a Scottish arms dealer.