Modern Warfare 4 Patch Notes: Maps, Weapons, Perks and Fixes at Launch

The Modern Warfare 4 patch notes are out, and they show everything players get on day one. Infinity Ward shared the notes before the worldwide launch on October 23, 2026, at 12 AM local time. Players who pre-ordered can preload now and jump in the moment it unlocks. Here’s a clear breakdown of the content, changes and fixes coming to Call of Duty . What’s in the Modern Warfare 4 patch notes at launch Multiplayer starts with a big lineup. Players get 20 maps, 12 modes, 33 weapons, 33 Operators and a full progression path to Level 55.