Every 9th Edition codex had a shelf life of about 36 months. You bought the book, played the faction for two or three years, then watched the rules get voided the week after the next edition hit shelves. I’ve been through this three times now. You wait for the new codex, scrape together £32.50, read the updated lore, and by month 18 you’re being told to check the app instead of the book you paid for.
That’s the 40K codex experience every hobbyist of a certain age has internalised. The new edition kills the old books. Always has.
The 11th Edition codex release schedule isn’t going to work that way.
The 2026 roadmap’s quiet surprise
GW confirmed the 11th Edition launch at AdeptiCon 2026 in March. It drops in June (rumoured June 20th), the launch box is called Warhammer 40,000: Armageddon, it pits Blood Angels against Orks, and it costs a rumoured $299. Most of that is unsurprising. The three-year edition cadence has been rock solid since 8th, and the return to Armageddon has been telegraphed for a full year.
The surprise is buried in the fine print of the announcement: every current 10th Edition codex remains valid at 11th Edition launch. No hard reset. No re-buying your faction book the week after the new edition drops. Your Tyranids codex from 2023 still works in June.
That’s genuinely new. 8th reset 7th. 10th reset 9th. Every edition launch in living memory has voided the previous edition’s codexes on day one. That’s why codex sales spike in the first six months of a new edition. GW needs everyone to re-buy. 11th isn’t doing that.
What a soft reset actually means
The framing GW is using is that 11th Edition is a refinement on 10th rather than an overhaul. The core changes revealed so far are meaningful tweaks, not rewrites: new detachment mixing rules, updated terrain rules for obscuring cover, one-stratagem-per-phase, leader abilities that persist after the bodyguard unit dies, and new Force Disposition objectives for each detachment.
Practically, if your faction has a 10th Edition codex, you’re fine at launch. Faction rules will keep getting updated through balance dataslates and the Warhammer 40K app. New codexes will still come. But the pace matters less than it used to, because your existing book remains legal. The pressure to buy a new codex the week it drops is lower than it’s ever been.
This is the most player-friendly edition transition GW has ever attempted, which is surprising, because player-friendly is not the first thing I associate with their pricing instincts.
There’s a counterpoint I should flag. The Drukhari codex which closed out 10th Edition, released in late 2025 with Lady Malys as the headline character, isn’t going to feel very current for very long. Those players just bought a book they’ll likely get a replacement for within two years. But that’s the curse of every last-codex-of-an-edition. It was doomed regardless.
The Index factions are in a weirder spot nobody’s really talking about. Imperial Knights, Chaos Knights, Leagues of Votann, and a handful of others never got a proper 10th Edition codex. They’ve been running off the free indexes for the entire edition. If the soft reset only covers actual 10th Edition codex books, those factions are going to launch into 11th with whatever indexes GW publishes alongside the core rulebook, same as last time. Which puts them at the front of the queue for new codexes, because they’re the ones without a valid book to fall back on. I’d bet good money on a Knights codex early in 11th, maybe as a combined Imperial/Chaos release, on that logic alone.
The codex release order is about production, not story
Nobody outside GW actually knows the 11th Edition codex release order. But every past edition has followed roughly the same pattern, and that pattern tells you more about GW’s warehouse logistics than about any grand narrative arc.
Space Marines go first. Always. The launch codex ships within weeks of the edition, sometimes inside the launch box itself. Orks get the second slot because they’re the other launch-box faction, and GW needs both books on shelves to sell the starter set. That’s Q1 of the edition, which for 11th means roughly June to August 2026.
Late 2026 is where Spikey Bits’ rumours put Adeptus Custodes, and the logic is solid. GW has already confirmed Heresy-era Custodes kits will be usable in 40K Custodes armies, which means the production lines and marketing momentum are already pointing in that direction. A Custodes codex in Q3 2026 is the safest bet outside Marines and Orks.
The Q4 slot is traditionally the second Imperium flagship, which is usually either Guard or a Chapter supplement. Given Yarrick’s return and the Armageddon campaign leaning heavily on Astra Militarum, I’d bet Guard is actually the late-2026 book and that Custodes gets bumped to early 2027. Even if the rumours currently disagree with me.
The first Chaos book of 11th probably won’t be Iron Warriors. Their Eye of Terror detachments already give them a full competitive toolkit, and GW tends to rest factions after big expansion releases. More likely it’s Death Guard or World Eaters, both of which feel narrative-ready for a new edition push.
Tyranids, Necrons, or Tau sit somewhere in the middle of the cycle. The Tau rumours are interesting because they point at model refreshes (new Crisis suits, possibly updated Broadsides), which usually means a codex is lined up to sell the new kits. Tau in the first half of 2027 is my best guess.
Late windows get Knights, Sisters, the smaller xenos factions, and the odd legacy book that keeps getting punted. Leagues of Votann will almost certainly be one of these, because they always are.
That’s the predictable shape. What GW has done consistently across the last three editions is pick one unexpected faction per cycle and promote them to an early slot. Leagues of Votann showed up basically from nowhere in 9th. Genestealer Cults got real attention early in 10th. The real 11th Edition question is which faction gets that wildcard slot.
My money is on Daemons. The codex hasn’t had a standalone release since early 9th, the model range is old, and a refresh with new Greater Daemons would fit the Chaos-advancing narrative of the Eye of Terror wave. Though I could be completely wrong about this. I’ve been wrong about faction predictions every edition so far.
The format rumour
One more thing on the format. 11th Edition codexes are rumoured to be slimmer than the 9th-through-10th wave, closer to the 8th Edition style. Fewer reprinted paint guides, fewer filler pages. I’ve seen this claim in three different places and none of them have an actual source, so salt accordingly. But the logic holds. If GW is running a soft reset, they need a reason for existing players to actually buy the new books, and “cheaper and more focused” is a plausible hook.
Whether that actually happens is another matter. The last time GW promised slimmer books we got the bloated 9th edition supplements with twenty pages of recycled stratagems in each one.
The clearance bin
Early 2023. Three weeks before 10th Edition dropped. I was in the Norwich Warhammer store for something else entirely, and they had a clearance bin of 9th Edition codexes at £5 each. I picked up Codex: Chaos Knights, which I didn’t even play, because I’d always wanted the book and £5 felt like the deal of the century. The assistant gave me a look I didn’t understand at the time.
Three weeks later that codex was rules-dead. Just an expensive art reference. It’s genuinely beautiful, for the record, with good Tzaangor-pattern artwork and a strong fluff chapter on the Dreadblades, and I’ve opened it maybe twice since. It lives on the shelf now as a warning that I will almost certainly ignore the next time a clearance bin shows up outside a GW store in May 2026.
Don’t do that. The soft reset means you don’t have to.
Can I be honest for a second
So yeah. 11th Edition codexes. Do I buy any at launch? Probably not. My 10th Ed Orks book is 18 months old. Barely touched. If it stays legal for a full year of 11th, that’s a lot of mileage I haven’t finished extracting. Maybe the Guard book when it drops, because I’ve been building an Armageddon-themed force on and off since last winter and the narrative hits hard enough that I’ll probably want the rules in hand. Other armies? Dunno. Wait and see.
The 11th Edition codex release schedule is going to shake out along predictable lines. Marines, Orks, Custodes, Guard, whichever wildcard GW has in a warehouse. But the actual story of this edition isn’t the order the books come out in. It’s that the order matters less than it ever has before.
Your 10th Edition books aren’t dying. You can wait. You can sit out the first year and only pick up the codex for the army you’re actively playing when it’s convenient. GW has quietly changed the deal.
Ask me again in August and I’ll probably tell you I bought three anyway. Old habits.
