Call of Duty: Black Ops IIII has just been revealed by Treyarch and the rumors about the part for next year are already on the rise. GamingIntel reports that they have heard that Call of Duty: Modern Warfare 4 is in development and that this game consists of a single player, multiplayer and a Zombies mode.
Infinity Ward would also consider a Battle Royale mode but that is not yet certainty. CharlieIntel has received similar reports and they report that a number of major developers, who had left the studio in 2010 to work at Respawn Entertainment, have returned to Infinity Ward to become Modern Wafare 4.
Take it for a moment with a grain of salt, as we will not hear anything about the new part until next year. A new Modern Warfare would not be a bad idea in itself, as Infinity Ward would return to a very popular sub-franchise.