Call of Duty: Modern Warfare was updated to version 1.30 today on December 16. This patch coincides with the Black Ops Cold War update.
Earlier this week, Call of Duty: Black Ops Cold War was updated by Activision and Treyarch. They are going to start the season 1 content for Black Ops Cold War with its integration in Call of Duty: Warzone. This is now followed by an update for Call of Duty: Modern Warfare and Warzone today on December 16.
Season One brings new weapons, maps, modes, Operators, Season Challenges, Prestige Levels, 1,000 new Season Levels to climb, and much more to both Black Ops Cold War and Warzone on Dec. 16th.
These patch notes only cover Modern Warfare. To read more on the patch notes for Warzone for the update that was released today, head over here.