User blog comment:Damac1214/Call of Duty 2014 Being Developed by Sledgehammer Games, Call of Duty Moving to Three Year Development Cycle/@comment-1916935-20140207020314/@comment-1055346-20140207172842

Except there's no point in following up WWIII's events because if the way the story wrapped up. Makarovs dead, Prive is alive, the war is over, the Russian President is safe, etc. There's no point to expand the universe in a radically different direction when they could just make a new series.