User blog comment:Argorrath/Sledgehammer Games claims to be working on a new MW game/@comment-98.230.84.179-20130719094031

The problem is that modern warfare is that it has become synonymous with its story. It's not just a time period anymore, it's the story. That's why it doesn't really make sense for a 4th modern warfare. It wouldn't make sense for it to be its own thing in that time period since the modern warfare series is all about the story rather than the time period like all the WW2 games.