Warzone just got a new home, a new map, and a fresh reason to yell at your controller. The Modern Warfare 4 Season 1 patch notes arrived with the season launch at midnight ET on November 6, 2026, and they touch almost every system in the game: maps, perks, movement, weapons, platforms and progression. Some of it is great. Some of it will quietly cost you a weekend of unlocks. This guide sorts the changes into plain English, explains what the Legacy weapon rules really mean for your old favorites, and ends with a short launch-day checklist so you spend less time in menus and more time getting eliminated on Hajin.

When Do the Modern Warfare 4 Season 1 Patch Notes Take Effect?

Season 1 flipped on at 12:00 AM ET on Friday, November 6, 2026. That is 9:00 PM PT on November 5 and 5:00 AM GMT. It lands on every platform at once and covers Warzone, Modern Warfare 4 multiplayer and DMZ, so one patch puts the whole ecosystem on the same season clock. MW4 itself launched on October 23, which gave players exactly two weeks of breathing room before the first big update.

• Who: Infinity Ward and Activision, with Warzone now running on the Modern Warfare 4 season cycle.
• What: Full Warzone integration, two new maps, three new modes, a reworked perk system and a 100-tier Battle Pass.
• When: Midnight ET, November 6, 2026.
• Where: PS5, Xbox Series X|S, PC and Nintendo Switch 2. PS4 and Xbox One are out for Warzone.
• Why it matters: Warzone moves into the Modern Warfare universe and drops last-generation hardware in the same patch.

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What Are the Biggest Warzone Changes in Season 1?

Warzone Season 1 is a full integration, not a content drop. Your player level resets, all 33 Modern Warfare 4 launch weapons arrive, and the old Black Ops 7 era steps aside. Here are the headline additions.

Hajin: The New Battle Royale Map

Hajin takes Warzone to the Korean peninsula for the first time, tied to the Modern Warfare 4 campaign. It has 13 major areas, dynamic weather, interactive environments, and its own Gulag where winners redeploy and losers stay dead. If you already know Hajin from DMZ, congratulations: you now get to be lost there with 119 other people.

Zodiac: The New Resurgence Map

Zodiac is the compact one. It is built around a drone factory, has 10 major areas, underground tunnels and a moving train. Small maps mean fast fights, so expect your first Resurgence match to last roughly as long as a microwave pizza.

Three New Modes at Launch

Standard Battle Royale and Resurgence, plus Casual versions of each, remain in the rotation. Rockets and Snipers and Extreme Resurgence follow at mid-season.

How Does Movement Work With Tactical Sprint Back for Everyone?

Every Operator can now tactical sprint without spending a perk slot, though the sprint lasts a little less time than before. You can also drag a downed teammate to cover while reviving them, which finally gives "pick me up" a literal meaning. Visibility, sightlines and footstep audio were all improved on every map, a quiet change that may matter more than any new gun.

The patch notes also trim circle timings, which the developers say shortens the average match by nearly five and a half minutes. They also removed the contract cash multiplier, so spamming contracts no longer snowballs your wallet. Expect a faster mid-game and a poorer lobby.

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What Are the New Perks, Field Upgrades and Killstreaks?

The perk system gets the biggest rebuild. You pick 15 perks before a match, split into three categories of five, then hunt for one of three Elite Perks inside the match. Phantom is the headline Elite Perk. You can only equip one at a time, so choose like it is the last slice of pizza.

New Field Upgrades

• Grabber Drone: a drone that snatches loot for you.
• Perk Supply Box: a deployable box of perk pickups.
• Laser Wire: a trap line for anyone not watching their feet.
• SAM Airburst Turret: anti-air protection for your squad.
• Smoke Wall: instant cover across a wide stretch.
• Zipline Launcher: build a fast route across the map.
• Redeploy Drone and Beacon: limited to Massive Resurgence on Hajin and Rally Point.

New Killstreaks and Ground Ops

Six killstreaks are new: Homing Beacon Strike, Bomb Glider, Carpet Bomb, Combat Drone, Shock Warhead, and Aerial Scanner (Rally Point only). Orbital UAV, CUAV and UAV return. Ground Ops add high-value safes that need a drill, watchtowers that reveal enemies and loot, cargo drones you can shoot down, and radioactive barrels you find with a Geiger counter. Your backpack is now a science fair.

Weapon Augments are air-dropped, limited, and capped at one per match. The three are CQC, Marksman and Handling. In Resurgence, a Weapon Trade Station upgrades your gun to a higher rarity, and four Drop Kits (Insurance, Loadout, Armor and Radar) change how you redeploy.

What Happens to My MW2, MW3, BO6 and BO7 Weapons in Warzone?

Your old collection survives, but it moves into a Legacy tab with strings attached. Operators, skins and Blueprints from Modern Warfare II, Modern Warfare III, Black Ops 6 and Black Ops 7 stay usable, and a new Operator Skin Toggle lets you hide anything that is not a Modern Warfare 4 Operator.

Here is the angle most guides skip. Two separate rules stack on top of each other. Your player level resets, and legacy Blueprints start locked until you unlock them with Player XP in the Armory. So the loadout you perfected last week now costs XP you no longer have, and you cannot even tweak it once it is back. Each rule is reasonable alone. Together, they work as a gentle push toward the 33 new weapons, which fits the developers' stated goal for the meta.

"...the weapon meta to feel distinctly rooted in Modern..."

The camo situation also got messier. Activision first said legacy weapon camos would come along, then corrected that. They do not carry forward. Players who spent months on those grinds were not thrilled.

Which Platforms Lose Warzone Support, and What About Switch 2?

Starting with Season 1, Warzone is no longer playable on PlayStation 4 or Xbox One. It left their stores on June 4, and the in-game store followed later in June. Older Call of Duty games stay playable online on those consoles. Warzone makes its Nintendo Switch 2 debut with Season 1, with Hajin, Zodiac and the other maps included.

What Is New in Multiplayer, DMZ and the Battle Pass?

Multiplayer gets three new maps at launch, including Backstab, a 6v6 medium-sized take on Shoot House set against light snowfall in North Korea. More arrive at mid-season, including Ministry and Overflow. DMZ gets X01, a new location, along with new DMZ Orders, Threat Briefing events, Resupply Runs and base upgrades.

The Season 1 Battle Pass has 100 tiers. The Cronen Osprey assault rifle and CSG-35 SMG are part of it, and both sit on the free track. BlackCell adds its own premium rewards. Warzone also gets server culling, a feature built to stop wallhacks, which should please anyone who has ever died to someone staring through a building.

What Should You Do First? My Launch-Day Checklist

In my experience, the first 48 hours of any Warzone integration belong to loadout limbo. Everyone is rebuilding, nobody trusts their guns yet, and the lobbies feel like a group project. I read the Season 1 patch notes side by side with the launch roadmap, and the pattern looks familiar: the real gains go to players who spend ten quiet minutes setting up before they queue. Here is the order I would follow.

1. Update and log in on the right account: Use your linked Activision account so progress and unlocks follow you.
2. Open the Legacy tab: See which Blueprints are locked and what they cost in Player XP before you plan a build around them.
3. Build around the 33 new weapons: They get Weapon Prestige and Warzone Mastery Camos, and they can be fully edited in the Gunsmith.
4. Test the new sprint: Tactical sprint is shorter, so learn how far it actually carries you.
5. Warm up in Rally Point: No circle, drop-in and drop-out, and a neutral zone make it a low-pressure place to practice.
6. Then take Hajin for a spin: Start with Casual Battle Royale if you want fewer sweats.

If you would rather see the maps moving than read about them, the official gameplay overview below covers the new locations and systems.

What Are Players Saying, and What Comes Next?

The season is only hours old, so treat any verdict as a first impression. The loudest complaints so far center on legacy content: the camo reversal, and the Gunsmith lock on older weapons. Opinion splits down the middle, with some players welcoming a cleaner, more focused meta and others calling the lock a quiet nerf to their favorite guns. Tactical sprint's return is the easy crowd-pleaser.

Looking ahead, Verdansk returns to Battle Royale later in the season, and Rockets and Snipers and Extreme Resurgence arrive at mid-season. A Season 1 Reloaded update is planned, but it has no announced date or full content list yet.

So, Is Season 1 Worth Jumping Into?

Yes, if you like a fresh start. Hajin and Zodiac give Warzone its biggest map refresh in a while, tactical sprint for all makes movement friendlier, and the three new modes cover everything from casual practice to 120-player chaos. The cost is the Legacy squeeze: a level reset, locked Blueprints and no Gunsmith access. Plan your first sessions around the new weapons, warm up in Rally Point, and give the patch notes a few days to settle before you judge the meta. Then go lose a fight on Hajin in style.