Though Infinity Ward has been producing Call of Duty games since 2003, Community Manager Robert Bowling told Develop in a recent interview that they don't feel tied to the franchise.

"We take it game-by-game," Bowling said when asked if they had considered moving on to a new IP. "We never worry about the future too much. Right now we wanted to make a sequel, so the entire team is hands on deck for making Modern Warfare 2. Then once this is done, maybe we'll see about doing something new. If we do want to do something else, then we will do it. We don't feel tied to making Call of Duty games."

"We still make Call of Duty games because we're having fun doing it. And when it stops being fun, we'll move onto something else."