None of these sequels come as a surprise, as they are all critical and commercial successes, but this is the first official confirmation of their existence. According to Activision Blizzard's earlier conference call, 50% of Activision's revenues are derived from franchises it owns outright, including Guitar Hero and Call of Duty. It should be noted that as well that all three franchises also have competition from rival Electronic Arts in the form of Rock Band, Medal of Honor and Skate. No word on project release dates for any of the sequels.
Read - Fact sheet [Warning: PDF file]