Modern Warfare 4 Season 1: When Does It Start & What's Confirmed? (Release Date, Warzone Integration & Roadmap) — 2026

Every year the biggest question after a new Call of Duty launches isn't "is it good" — it's "when does Season 1 drop, and what does it change?" For Modern Warfare 4 that question carries extra weight, because Season 1 is the moment Warzone stops being a Black Ops 7 game and becomes a Modern Warfare 4 game. If you're deciding whether to buy MW4, when to start grinding, or whether your Warzone habits survive the transition, the Season 1 timing is the hinge everything turns on.

Below is the honest version, built straight from Activision's own announcement and support pages — with a hard line drawn between what's officially confirmed and what's still a community estimate. No leaks stated as fact.

Quick answer (TLDR): Modern Warfare 4 launches October 23, 2026, and Activision has confirmed only that Season 1 arrives "shortly after" launch — it has not given an exact Season 1 date. Based on the standard Call of Duty calendar, the community expects Season 1 in early-to-mid December 2026, but treat that as an estimate, not a confirmation. What is confirmed: beginning with Season 1, Call of Duty: Warzone integrates MW4 content and seasonal progression, becoming one connected experience. As part of that transition, Warzone on PS4 and Xbox One stops working at Season 1 (last-gen support ends). MW4 itself is not playable yet outside its finished Open Beta.

When does Modern Warfare 4 Season 1 start?

The single most-searched claim about MW4 Season 1 is the exact date — and it's the one thing Activision has deliberately not pinned down. In its official Modern Warfare 4 announcement, the studio's exact wording is:

"Modern Warfare 4 launches on October 23, with Season 1 shortly after to kick off a major year of content and seasonal experiences across both Modern Warfare 4 and Call of Duty: Warzone."

Read that carefully. "Shortly after" is the only official timing. There is no confirmed calendar date for Season 1 as of this writing.

So where does "December" come from? History. Call of Duty's launch-to-Season-1 gap has been remarkably consistent:

• MW2 (2022): launched Oct 28, Season 1 dropped Nov 16 — about 19 days later.
• MW3 (2023): launched Nov 10, Season 1 dropped Dec 6 — about 26 days later.
• BO6 (2024): launched Oct 25, Season 1 dropped Nov 14 — about 20 days later.

Apply that same 3-to-6-week window to MW4's October 23 launch and you land somewhere between mid-November and early-to-mid December 2026. That's the reasoning behind the December estimate — it's a pattern-based projection, not a leak or an official date. If you see a page stating "MW4 Season 1 begins on [specific date]," check whether it's citing Activision or just inferring from the calendar like everyone else.

Bottom line: plan your grind around a launch-day start (October 23) and a Season 1 refresh roughly 4–7 weeks later. We'll update this post the moment Activision confirms the date.

What actually happens at MW4 Season 1? (The Warzone integration)

This is the part that is confirmed, and it's a bigger deal than the date. Season 1 is when Warzone stops being a Black Ops 7 experience and integrates with Modern Warfare 4. From the same official announcement:

"Beginning in Season 1, Call of Duty: Warzone will integrate Modern Warfare 4 content and seasonal progression as part of a connected experience between both titles."

In plain terms, at Season 1:

• Warzone runs on MW4's foundation. MW4's arsenal, gunplay tech (the new no-bloom "Ballistic Authority" system), and seasonal progression flow into Warzone. The two games share a content cadence instead of running on separate tracks.
• One seasonal progression. Season 1's Battle Pass and progression are designed to span both MW4 multiplayer and Warzone, so the season you buy into carries across both.
• BO7 hands off the baton. Black Ops 7 keeps running its own seasons up until this transition — Activision confirmed players can "continue unlocking new weapons in remaining Black Ops 7 seasons" through the free Battle Pass tiers before Season 1 arrives.

If you want the full breakdown on the map, mode and reset side of this, we covered it in our MW4 + Warzone integration explainer. And if you're a Warzone loadout player worried about your arsenal, our guide on whether your Warzone weapons and blueprints carry over to MW4 answers the exact question.

Why does this matter for timing? Because a shared progression system means the Season 1 Battle Pass is not a Warzone pass or an MW4 pass — it's one track. When you buy or grind that pass, the tiers you unlock are meant to be usable across multiplayer, DMZ and battle royale. That's a change from the recent split-title years, where Warzone and the annual premium release often ran progression on parallel-but-separate rails. Activision hasn't published the tier-by-tier structure yet, so treat any leaked pass contents you see as unconfirmed — but the architecture (one connected seasonal experience) is straight from the announcement. Practically, it means the smart move is to enter Season 1 with your base MW4 progression already maxed, so the pass grind is pure upside rather than a catch-up.

The one confirmed casualty: last-gen Warzone dies at Season 1

This is the confirmed detail most players miss until it hits them. Warzone on PlayStation 4 and Xbox One stops being playable starting with Season 1. This is directly from Activision, not a rumor. The official Warzone platform update laid out the timeline:

• June 4, 2026: Warzone could no longer be downloaded on PS4 and Xbox One, and CP (Call of Duty Points) bundle purchases were disabled. Existing installs kept working — for now.
• June 25, 2026: the in-game store was fully removed on those platforms, though free Battle Pass tiers still progressed.
• At Season 1 launch: last-gen Warzone becomes unplayable entirely. If you're on a base PS4 or Xbox One, your Warzone access ends here.

That's a hard cutoff, and it's tied to the undated Season 1 — which is another reason the exact date matters if you're a last-gen holdout. MW4 itself was never coming to PS4 or Xbox One (it's PS5, Xbox Series X	S, PC and Nintendo Switch 2 only), so Season 1 is effectively the end of the last-gen Call of Duty era.

If you're still on a base PS4 or Xbox One, that gives you a concrete deadline: your remaining Warzone playtime runs out the moment Season 1 goes live — whenever that lands in the "shortly after October 23" window. There's no announced way to extend it and no last-gen version of MW4 to migrate to, so the only path forward for battle royale is an upgrade to current-gen hardware or PC. Anyone planning to make that jump should line it up before Season 1 rather than after, so you don't lose access mid-grind and have to restart your seasonal progress on new hardware. It's a small planning detail that catches a lot of players off guard every hardware-transition year.

What content is confirmed for MW4 Season 1?

Activision has confirmed the shape of Season 1 without a full item list yet. Here's what's officially on the table versus what's still unannounced.

Confirmed:

• A "major year of content" kicking off at Season 1 across both MW4 and Warzone (Activision's phrasing).
• A shared seasonal Battle Pass and progression spanning MW4 multiplayer and Warzone.
• Warzone integration — MW4 arsenal and systems flowing into the battle royale.
• DMZ as MW4's third pillar alongside Multiplayer and Warzone (DMZ returns as a core mode, confirmed in the reveal).

Not yet confirmed (expect these at a pre-season blog drop):

• The exact Season 1 map(s) for both multiplayer and Warzone.
• The Battle Pass Operators and weapons in the Season 1 pass.
• Ranked Play's launch timing — Activision hasn't confirmed whether ranked is live at launch or arrives with a season. We mapped the likely windows in our MW4 Ranked Play release-date breakdown.
• Any Zombies content — MW4 leans on DMZ for its third mode; round-based Zombies stays in the Black Ops lane.

A useful reference point: what launches with the base game on October 23 versus what waits for seasons. We covered the day-one content in what's in the full game vs the beta, which is the best way to set expectations for how much Season 1 actually adds on top.

How Season 1 changes your grind (and how to be ready)

Season 1 resets the clock in ways that matter if you care about camos, ranks and progression:

• A fresh seasonal reset. New Battle Pass, new challenges, and the seasonal progression that now spans Warzone too. The players who finish the launch grind before Season 1 lands are the ones sitting on max weapons and mastery camos when the new season's content drops.
• Double XP windows. Season launches historically come with Double XP / Double Weapon XP events — the single best time to close out a leveling grind. If Season 1 lands in that December window, that's your farming opportunity.
• Camo tracks carry forward. MW4's mastery camo grind runs across Multiplayer, DMZ and Warzone on a shared track, so progress you bank at launch keeps counting into Season 1.

The strategic takeaway: the launch-to-Season-1 gap is the highest-value grind window of the whole year. Get max rank and your guns leveled in that 4–7 week runway and you start Season 1 already ahead. If SBMM at launch is chewing you up and slowing that grind, our guide on how MW4 matchmaking works at launch explains your options for easier lobbies.

That runway is exactly why we built our MW4 services to be live and ready for October 23 — so you can lock in max rank, maxed guns and top-tier camos before Season 1 flips the board.

Get Season-1-ready before the reset — our MW4 services are live for October 23:

- MW4 Bot Lobbies — skip the launch-week sweat and level up in easy lobbies from day one.

- MW4 Account Leveling — hit max rank and unlock everything before Season 1 lands.

- MW4 Weapon Leveling — max your guns fast so you're not re-grinding into the new season.

- MW4 Mastery Camo Unlock — bank the top-tier mastery camos on the shared track before the Season 1 content wave.

FAQ

When does Modern Warfare 4 Season 1 start? Activision has only confirmed that Season 1 arrives "shortly after" the October 23, 2026 launch — there is no official Season 1 date yet. Based on Call of Duty's recent launch-to-Season-1 gaps (roughly 3–6 weeks), the community estimate is early-to-mid December 2026. That's a projection from the calendar, not a confirmed date.

Is the December 2026 Season 1 date confirmed? No. It's an estimate based on how MW2, MW3 and BO6 all launched their first seasons about 3–4 weeks after release. Activision's only official wording is "shortly after" the October 23 launch. Any exact date you see right now is an inference, not a confirmation.

What happens to Warzone at MW4 Season 1? Beginning with Season 1, Warzone integrates Modern Warfare 4 content and seasonal progression into a single connected experience. MW4's arsenal and systems flow into Warzone, and the two share a seasonal Battle Pass and progression. This is officially confirmed by Activision.

Can I still play Warzone on PS4 or Xbox One after Season 1? No. Activision confirmed that Warzone on PlayStation 4 and Xbox One stops being playable starting with Season 1. Downloads on those platforms ended June 4, 2026, and the in-game store was removed on June 25, 2026. Season 1 is the full cutoff for last-gen Warzone.

Does Modern Warfare 4 have a Season 1 Battle Pass across both games? Yes — Activision confirmed a shared seasonal progression spanning MW4 and Warzone beginning in Season 1. The specific Operators, weapons and tiers in the Season 1 pass haven't been revealed yet; expect a pre-season blog drop closer to the date.

What content is confirmed for MW4 Season 1? Officially: a "major year of content" kicking off across MW4 and Warzone, a shared seasonal Battle Pass, and the Warzone integration itself. The exact maps, modes, Operators and weapons for Season 1 have not been announced yet, so anything itemized today is unconfirmed.

Is DMZ or Zombies in MW4 Season 1? DMZ returns as MW4's confirmed third mode alongside Multiplayer and Warzone and is part of the launch package. Round-based Zombies is not part of Modern Warfare 4 — that mode stays in the Black Ops lane. No Zombies content has been confirmed for MW4 Season 1.