New Iron Warriors models, along with an Eye of Terror 40k book, were previewed by GW. Here’s everything we know from release dates to pricing for what’s next.
Games Workshop did that classic “blink, and you missed it” move in the New Year Preview, then followed it up with a proper tease.
Since the initial preview, GW has revealed a whole host of units for the Iron Warriors and the Eye of Terror 40k Campaign. But there are still some juicy bits missing, like the Combat Patrol, release dates, and the ever-sticky question of Perturabo.
Let’s break down what they have revealed, how it lines up with the new Iron Warriors model rumors, and what you can actually do right now if you want to be ready when the siege doors finally open in April.
New Eye of Terror 40k Book Revealed
Updated on March 2nd, 2026, by Rob Baer with new reveals and rumors.
- Eye of Terror is the anchor: GW tied new IW teasers to a new Eye of Terror 40k supplement due “soon™.”
- Warsmith revealed: the shoulder claw, flamer bits, and Iron Warriors vibe point straight at the new Warsmith (Kravek Morne) leading the charge.
- Upgrade sprue confirmed: new Iron Warriors pads plus melee kit support like the big hammer for your Champions.
- Mutilators are back on the table: the “big infantry” clues were the newly revealed Mutilators.
- Daemon engine rumors paid off: the heavy exhausts and ground claw match the revealed new Defiler, complete with options and legion flair.
- What to watch for next: rumors are shifting toward an Iron Warriors Combat Patrol or battalion-style box, while Perturabo is pure speculation until GW shows the centerpiece.
GW is not being coy anymore. This is not some vague “Eye of Terror” wink and a shrug. Eye of Terror: Reign of Iron is confirmed as the next Warhammer 40,000 expansion, and it’s coming in that familiar premium campaign format: multiple books in a decorative slipcase, packed with narrative, detachments, and a whole rules layer built for huge games.
The premise is brutal and very Iron Warriors. Cadia blew, the Great Rift tore reality in half, and Chaos is flooding out of the Eye of Terror, but the Cadian Gate still has teeth. Imperial bastions and forge worlds are still clinging on, and as long as they do, Chaos cannot just stroll into a straight-line grind toward Terra.
Perturabo’s long-game plan starts with one simple, ugly requirement: put the Cadian Gate completely under his boot. That means cracking the holdout worlds, including the forge world Agripinaa, with a siege that looks like a bad idea and feels like a dare.
40k Apocalypse is Back!
The new Eye of Terror 40k Reign of Iron book is doing three big things at once.
- First, it’s pushing the story forward with a deep look at the Iron Warriors’ prep and assault, plus an extensive spotlight on Warsmith Kravek Morne and the mortal and daemonic forces he is throwing into the meat grinder.
- Second, it’s bringing Apocalypse-scale play back into 40k with modular guidelines designed to streamline massive battles, so you can bolt rules on or strip them off depending on how you like your big games to run.
- Third, it’s dropping new detachments for Chaos Space Marines, Space Marines, Chaos Knights, Imperial Knights, and Adeptus Mechanicus, including themes like Vashtorr daemon engines, Freeblade mercenary Knights, and Skitarii-heavy cohorts that tie directly into the conflict and the recently revealed models.
So yeah, if your hobby calendar is already “set in stone,” maybe leave it a little… less stone. This is a full campaign-style rollout with lore, detachments, and apocalypse-level rules all in one swing!
New Iron Warriors, Eye of Terror 40k Rumors, and What’s Next?
GW’s been slow-dripping Iron Warriors, and now the rumor pile is starting to get solved in a way that feels more like a planned reveal over time.
The big rumor left now is if there will be a new Iron Warriors Combat Patrol (or maybe a new style Battalion box) like we saw with the 500 Worlds and Maelstorm releases.
Then there is the spiciest question, Perturabo in 40k, which is absolutely not guaranteed, but it fits the classic GW pattern where narrative pressure plus a current faction refresh sometimes equals a BIG centerpiece model.
Expect to see some Eye of Terror book pre-orders soon, and official reveals for the rest of the stuff. We wouldn’t be surprised to see these have a street date in the middle of April with a Sunday teaser just before Adepticon 2026.
Iron Warriors Combat Patrol or Battalion: (Rumors)
The whispered loadout for a new Iron Warriors Combat Patrol or Battalion box looks believable based on the other ones we have seen so far.
- Warpsmith
- Ten Legionaries
- Five Havocs
- Five Chaos Terminators
- Iron Warriors upgrade sprue
If this rumor turns out to be true, this could be a great bundle box starting new Iron Warriors in 40k.
Perturabo Rumors…
The safest hope from Primarch disappointment at this point is to treat Perturabo as the long game reveal, and watch for the smaller teasers, namely, whether Iron Warriors get a big box bundle to go with all these new minis.
GW Reveals New 40k Iron Warriors Models
Here is a quick rundown of all the new Iron Warriors model kits that are on the way for them, with most being usable by other Chaos Space Marine legions as well.
Kravek Morne: New Warsmith is Here
Kravek Morne is the Iron Warriors poster boy for the confirmed Eye of Terror: Reign of Iron campaign, and he’s basically a walking siege engine with a personality stapled on. He’s rocking ancient Horus Heresy era Cataphractii Terminator armour he calls the Iron Mantle, which is an instant kitbash magnet before you even get to the details.
Then you clock the weaponised mechatendrils, all the augmetic nonsense wired into the suit, and his personally-crafted thunder hammer, Last Argument, which is the most Iron Warriors name imaginable.
New Iron Warriors Upgrade Sprue
GW is dropping a new Iron Warriors upgrade set loaded with heads, shoulder pads, and bits for Legionaries, Terminators, and Chosen, plus the real prize: a thunder hammer and power fist for your Aspiring Champions. Upgrade sprues only matter if they change the silhouette and give you weapon options you will actually use, and this one looks like it clears both hurdles.
It should pop hardest on Legionaries for instant Iron Warriors identity, Terminators for that brutal siege-core vibe, Chosen for tool-heavy “we break fortresses” detailing, and Champions for standout weapons and easy list flexibility.
New Mutilators Arriving for Chaos
A new Chaos Space Marines Mutilators kit landing next to Kravek Morne and an Eye of Terror campaign book is GW shouting without using caps lock. Stack that with the Iron Warriors siege-lore angle, the usual rumor breadcrumb pattern, and the lingering “daemon engine still left” thread, and it really looks like this is the opening salvo of a bigger Iron Warriors release arc.
Iron Warriors Bring a New Defiler With Them
After more than twenty years, the Chaos Space Marines Defiler is finally getting a real centerpiece refresh, and it feels like the loudest possible full stop on the whole Iron Warriors tease cycle.
The iconic crab-tank silhouette is still there, but now you are getting modern kit flexibility with extra weapon options, alternate heads including god-specific looks, and poseability that actually rewards hobbyists and practically begs for magnets.
If you want to see all the new Chaos Space Marines Iron Warriors models that the New Year’s Preview teaser bits revealed we have them for you in our Rumor Engine Roundup here.
New Iron Warriors Models & Eye of Terror 40k Book: What to Watch For Next
At this point, almost everything is confirmed, and honestly, everyone saw it coming. GW has flat-out tied the new Iron Warriors bits and models to the upcoming Eye of Terror 40k: Reign of Iron campaign books, so this is not “maybe” territory anymore; it’s an actual release arc.
All that is left is the official pricing and the preorder teaser, which will probably hit before Adepticon with a mid-April street date, plus the one remaining question mark: do the Iron Warriors also score a new Combat Patrol box as part of the push?
And no, that still does not automatically mean “Perturabo confirmed.” But yes, the IV Legion is getting real attention, and it finally looks like more than just a paint scheme and a dream.
See All the Latest Chaos Space Marines Rumors Here!
I have to agree, my first thoughts were that all the images come from a new warsmith. Even the exhausts fit E.g. the warpsmith, especially with the heavy duty feet to take the weight.
Those exhaust pipes are defo not from a warsmith/warpsmith, Those are most definitely from the new rumored defiler kit,
That ain’t a pintle mounted flamer, not sure how you are viewing that image, but you can clearly see its a servo arm mounted with a flamer, you can just see the ball joint, as seen on tech marines for example, and just below that, is what is clearly a shoulder plate, which from the look of how its angled, its Cataphractii, which likely means a plastic Chaos Cataphractii warsmith, at minimum, or if we are been optimistic a named character