Modern Warfare 4 Season 1 Patch Notes: The Changes That Matter
Published 2026-11-08 by Jon Alden, Alden Tech
Season 1 of Modern Warfare 4 is live. Four new maps, two new weapons, a 17 weapon tuning pass, a new DMZ zone, and a November 7 fix update. Here is what changed, pulled from Infinity Ward's official notes.
Season 1 of Call of Duty: Modern Warfare 4 kicked off November 5, with follow-up updates on November 6 and 7. Here's what changed, straight from Infinity Ward's notes. Short version: this is a real season launch, not a playlist shuffle.
New content
Four maps join the rotation: Backstab, a new 6v6 map set in a snow covered town, Canyon, a new 6v6 map built around open ground and elevation, the return of Shoot House, and Kill Block: Crash as a featured combo. Grind and Drop Zone are back as modes, and Gauntlet 1v1 arrives later through the Wager Match Event.
The November 6 update added the Shransit playlist, which rotates Shipment, Shoot House, and Transit 213, with Hardcore available through Quickplay. If you want fast games on small maps, that's the playlist.
Two new base weapons arrive with the Battle Pass: the Cronen Osprey, a 5.56 assault rifle, and the CSG-35, an SMG built to run akimbo. Two more weapons are planned later in the season. DMZ gets X01, a new Exclusion Zone in an underground GRANIT Arms facility beneath Hajin, with new Orders and an in world 3D printer. The Season 1 Battle Pass is a linear 100 tiers and automatically catches owners up to the reward for the current day of the season, up to Day 50. Infinity Ward also says additional maps will join the rotation later in the season.
Two events headline the season. Threat Briefing: Battle Tank sends DMZ players after Battle Tank threats, looting and exfiling armor fragments for rewards. The Wager Match Event is coming soon: trophies are the currency, and the Gauntlet 1v1 Gunfight playlist is its Multiplayer centerpiece, with the winner staying on to face the next challenger.
Warzone and the lobby shopping crackdown
Season 1 also integrates Modern Warfare 4 into Warzone, and it comes with an enforcement change. Activision calls Warzone Agent an unauthorized, paid third-party app that lets players check lobby skill during warm ups and dodge harder matches. Starting with Season 1, it's detected at launch. Players running it get told to close it, and those who don't are blocked from Multiplayer modes, with temporary or permanent account and hardware bans possible for working around the block. Campaign access isn't affected.
Weapon tuning: mostly buffs, three real nerfs
Infinity Ward retuned 17 weapons for Season 1, and most of the changes are buffs. The M4, Kastov 762, Axion, Han 86, Patriot XMR, ISO Nightshade, PPSh-41, Wz.55 Striga, X-58 Nyx, Type 73, Rezi 12, Mosin-Nagant, Oris 8.6, and Krait P68 all gained damage, range, or headshot value. If you dropped any of those guns at launch, they are worth another look.
Three changes cut the other way. The Hyeon Burst with the Hyperbust Apex Attachment takes the biggest hit: maximum damage drops from 30 to 23 and minimum damage from 25 to 20, though its maximum damage range grows from 24.64 to 30.99 meters and the middle damage tier is removed. The base Hyeon Burst actually got a small buff, so the attachment is the problem, not the gun. The VEL 46 loses a little damage range at every tier but gains minimum damage, 13 to 14. The APOC-338 loses a point of minimum damage and some headshot multiplier.
Gameplay changes
Hardcore players feel this one right away: maximum health in Hardcore modes drops from 30 to 22. Equipment got faster and meaner. Proximity Mines now arm in 0.75 seconds instead of 1.5, and Claymores arm in 0.75 seconds with a wider trigger cone and a longer forward range. The Argonaut killstreak is much harder to kill, with health up from 800 to 1,200, while the Crossfire bullet damage was cut in half in Multiplayer and it now has spawn protection.
In DMZ, the Possum trait got harder to use: the enemy squad that killed you now has to be 2.5 times farther away before it activates, and the failsafe timer went from 4 minutes to 5. The Supplied Drops trait now applies to Dynamic Operations crates, and its chance of an extra container doubled from 25 percent to 50 percent.
The November 7 fixes and known issues
The November 7 update is fixes only. In Multiplayer it fixes Field Upgrades being lost on certain surfaces on Lithium, Grind objectives not spawning in Private Match, and players getting stuck on the Scoreboard after Hardcore matches. DMZ got a longer list of X01 fixes, including a story mission progression blocker in Operation Fallen Ember. Known issues to watch: Platinum camo challenges aren't tracking for the Cronen Osprey and CSG-35, the Warfighter and Warfighter Prime skins are temporarily disabled, and Infinity Ward is investigating a crash at launch for Steam players after the Season 1 update.
One hardware note
Performance Mode at 120Hz is now open to every PlayStation 5 and Xbox Series X|S player with a 120Hz display, whether or not the display supports VRR. Infinity Ward still recommends VRR for the best experience. On PC nothing about that changes, but it's the same lesson I give customers here: a fast panel only matters if the machine feeding it can hold the frame rate. If your PC is struggling to hold high frames in MW4 at 1440p, that's a hardware conversation, and it's one I am happy to have. One honest note on performance: Infinity Ward lists stability fixes in both the November 5 and November 7 notes, but no independent before and after performance testing of Season 1 has been published yet, so treat any claim that the patch raised frame rates as unproven for now.
What players are saying
From the Reddit threads I've seen, the reaction to the patch itself has been mostly positive. Hardcore players are the happiest group: in an r/modernwarfare4 thread, the cut to 22 health was welcomed because at 30 health too many guns needed a second bullet in a mode built around one shot kills. A few players pushed back, saying 22 might go too far, and the new shot counts at 22 health are still being worked out in private matches.
In DMZ, the tighter Possum rules answer a complaint that goes back to DMZ early access, when players were calling the trait broken and asking for it to be reworked or removed. What didn't get a fix: the cost of rescuing a high level operator, which had players calling a 55,000 cash rescue ridiculous, and the calls for a PvE only DMZ mode. Matchmaking is the other carried over complaint: every playlist uses the Standard system, with no Open playlist, and Season 1's notes don't mention any matchmaking changes.
Sources: Call of Duty, Modern Warfare 4 Season 1 Patch Notes, callofduty.com, checked November 8, 2026. Weapon tuning figures from the official Season 1 notes, checked November 8, 2026. Player reaction as reported by Timesaver, HardcoreSnD, Axortex, and FPSHub from r/modernwarfare4 threads, checked November 8, 2026.