The exec would not elaborate further but the series has seen some user criticism recently from those who think the series is a lot of "the same" just with a new name and new maps.
2011's Modern Warfare 3 was an unequivocal success, bringing in over $1 billion in sales in just 16 days. Last November, the game helped the video game industry enjoy its best November, ever.
The company will also be updating its CoD: Elite subscription service to version 2.0, soon: "Elite has been a great success. It has generated seven million subscribers and 1.5 million premium members. That's very important to us ? there was a lot of risk in establishing it. So now we're thinking about how we further pursue those kinds of opportunities."