Season 4 of Modern Warfare 3 and Warzone introduces perk changes, more operators, higher player count, new weapons, and balancing updates.

Season 4 of Modern Warfare 3 and Warzone introduces perk changes, more operators, and higher player count in standard Battle Royale, along with two new weapons in the battle pass. The update also includes weapon balancing, with a significant nerf to the BP50 assault rifle and buffs to several submachine guns. New multiplayer maps, game modes, perks, and killstreaks are also featured.