Activision has laid off Infinity Ward CEO Vince Zampella and CTO Jason West. The news raged through the game industry last night, with G4 first reporting on accounts from an inside source that Activision security personnel had shown up at the developer following a meeting between the publisher and Zampella and West. That was followed by a Facebook entry by West, then a LinkedIn update by Zampella that each had left the company. News outlets then dug up a note about breaches of contract and insubordination and impending departure of key personnel and litigation in reference to two of the studio s senior managers in Activision’s annual filing with the SEC. Activision has since confirmed the terminations, and added that it is setting up a Call of Duty business unit to expand the brand and develop online content. G4 says upcoming Call of Duty games revealed by the publisher include a Treyarch developed title later this year followed by an action-adventure title from Activision-owned Sledgehammer Games in 2011. Read more at G4.