Activision has announced the formation of a new unit to run the Call of Duty series, also confirming reports of the departure of former studio heads Jason West and Vince Zampella, according to Reuters. Word is: "An Activision spokesman declined to provide any details beyond the filing, but said the departure of the Infinity Ward executives and the decision to form a new business unit for 'Call of Duty' were unrelated." The story also says: "The new 'Call of Duty' business unit will be led by Philip Earl, who currently runs Activision Publishing's Asia Pacific region. The company said it will look to expand the brand into new geographies and genres, and focus on higher-margin digital online content. Steve Pearce and Steve Ackrich will lead Infinity Ward on an interim basis." The report also says: "The newest "Call of Duty" title, scheduled for release this fall, was developed by a different Activision studio, as was another title in the series expected to be released in 2011." This is expanded by Gamasutra where they confirm rumors that start-up studio Sledgehammer is working on the 2011 game, while this year's installment in the series will be created by Treyarch. According to Edge Online, Sledgehammer's contribution to the series will be an action/adventure, rather than a first-person shooter.