MW4 launch patch notes: perks, streaks, movement and every key fix

Infinity Ward published the launch patch notes for Modern Warfare 4 on 23 October. The headline changes affect how you move, which perks are worth a slot and how quickly streaks come back. The structured list below links every change to its page on MW4 Intel.

The big ones

• Tactical Sprint is no longer standard. It now comes from the Blood Rush perk (Perk 2), and with Blood Rush equipped there’s no extra sprint-out penalty. The default input is a single tap of run; double-tap and other options are still in Movement Advanced Settings.
• No per-gun numbers yet. Every weapon and attachment had a balance pass. SMGs are stronger at close to mid range, and one-shot weapons had flinch and damage tuned. Infinity Ward says further weapon tuning is under review.
• TTK: players preferred the Beta Weekend 2 time-to-kill. Rather than publish new TTK numbers, the team rebalanced individual weapons and classes around it.
• Streaks stay expensive. Beta streak costs remain. The UAV costs 5 kills (4 with Hardline), but now has 150 health instead of 100. Objective play, like capturing a Domination flag, now fills your streak meter too.

Progression notes

• Create-a-Class unlocks at Player Level 4. Use the Default Loadouts until then.
• Weapon Prestige returns. Prestiging a gun locks its attachments, including shared ones, and switches it to a classic level track. Shared attachments stay unlocked on your other weapons.
• Some seasonal Apex and attachments from the Beta have been pulled for now. The notes say they’re coming back soon.
• Weekly Challenges won’t be in Season 1. Events take their place: they reward Apex Attachments, camos, calling cards and Operator skins, and recurring events let you retry rewards you missed.

Known issues

Infinity Ward is tracking live issues on its official Modern Warfare 4 Trello board. At launch, the main known issue was DMZ AI vehicles driving without drivers or getting stuck. Fixes have rolled out and the team is monitoring them.

Sources:

• Call of Duty: Modern Warfare 4 Launch Patch Notes — Infinity Ward, 23 Oct 2026