Call of Duty: Modern Warfare 3 and Warzone players can enjoy numerous improvements in the form of a significant new update that's just been released. Now in its first season, Call of Duty: Modern Warfare 3 has added new maps, modes, weapons, and even a fourth story chapter for Zombies. Additionally, Season 1 introduced the new Battle Royale map Urzikstan to Call of Duty: Warzone.