Warzone & Cold War Playlist Update (Today, March 4) - Patch Notes Here is everything new in today's update. Call of Duty: Black Ops Cold War and Call of Duty: Warzone had a plethora of updates lined up in the past few weeks. It all started with the much-coveted Season 2 Update, followed by numerous other bug fixes, quality of life changes, and more. Today, Treyarch has released another patch for the game which adds a new game mode and changes the playlists in the game. Here are the complete patch notes of the update. Warzone & Cold War Update (Today, March 4) – Patch Notes