40k Codex Release Dates: 11th Edition Codexes & Roadmap

Spikey Bits » Roadmaps » 40k Codex Release Dates: 11th Edition Codexes & Roadmap

Track every Warhammer 40k codex release date for 10th Edition (2023–2026), and see what’s rumored and out now for 11th Edition.

You can only hit refresh on “What Warhammer 40k codex is next?” so many times before you start seeing the Emperor in your browser cache.

If you want the real-world Warhammer 40k codex release schedule roadmap for 11th edition, this is the practical version. We have all the confirmed windows when they exist, the rumors that actually have legs, and the release patterns that usually tip GW’s hand.

We break down the 2025 and 2026 release schedule and latest Warhammer previews to focus on what those dates mean for your faction, army lists, and hobby backlog.

Warhammer 40k Codex Release Schedule 2026: 11th Edition Codexes So Far

Let’s break down the overall tenth 40k codex release schedule for 2026 so far, with a quick look at what is on the horizon. Plus, we talk 11th edition codex predictions based on how eighth, ninth, and tenth rolled out.

TL;DR: Latest 40k Codex + Rules Updates (Confirmed)

• October 2026: Adeptus Custodes (New 11th Edition Codex Format)
• October 2026: Space Marines (New 11th Edition Codex Format)
• September 2026: Orks Codex (New 11th Edition Codex Format)
• June 2026: 11th Edition Core Rules (free download)
• April 2026: Wazdakka (Orks), Astra Militarum, Yarrick, Adepta Sororitas, Imperial Agents, Armageddon rules 
• March 2026: Iron Warriors, AdMech, Imperial Knights, new Eye of Terror rules (Teased)
• February 2026: Huron, Corsairs, Maelstrom detachments, and Xenos Character rules
• January 2026: New 500 Worlds Supplement Ultramarines and Necrons Rules
• December 2025: Grotmas Calendar featured new Space Wolves, Emperor’s Children, Astra Militarum, Chaos Space Marines, Blood Angels, and Aeldari Rules PDFs

Warhammer 40k 11th Edition Rules: Keep Your Current Codex Alive

The biggest win for Warhammer 40k 11th Edition is pretty simple: your current codex isn’t getting fed to the recycling servitor on launch day. Games Workshop has confirmed that existing codexes and faction rules will still be valid in the new edition, including recent campaign supplement rules like Armageddon: Return of Yarrick.

Of course, “valid” doesn’t mean “unchanged forever.” Detachments are getting reworked for more flexible army building, and 11th Edition looks more like a refinement pass than a full system reset.

Current 10th Edition codexes should carry you into the new edition, but once your faction’s 11th Edition codex eventually arrives, that’s when the old book likely starts gathering dust next to your unused 9th Edition stratagem cards.

The new Orks Codex, compared to the 2nd Edition, is smaller and thicker.

Best of all, Codexes in 11th edition are getting bigger but cost less now (only $40 in the US), and come in a softcover format with a slipcase. The new Ork Codex is a massive tome with nearly 100 pages of lore and lets you download more content via the app throughout the book’s life.

This new deep lore format will carry across all the 11th edition codex releases, with each book built around its faction from the ground up. Plus, Collector’s Edition Codexes will be back in Hardback too, with foil accents and a fold-out cover that clasps shut.

Best of all, GW dropped a full 11th edition Q&A covering everything from access to rules changes and confirmed the core rules will be free via the Warhammer 40,000 app (so you don’t need the Armageddon box to play), and outlier factions like Deathwatch, Grey Knights, Chaos Daemons, and Imperial Agents are all still playable!

Faction Packs Are The 10th Edition Bridge To 11th Edition Codexes

Now we have all the rules to use the current 10th edition Codex books in 11th edition Warhammer 40k. You can check out all the faction pack articles with all the changes at the links below for all the current armies.

• Space Marines Faction Packs
• Xenos Faction Packs
• Chaos Faction Packs
• Imperial Faction Packs

When Did the Orks Codex Come Out? (11th Edition Release Date)

Codex: Orks was released on Saturday, September 5, 2026, making it the first codex of Warhammer 40k 11th Edition. Like every 11th Edition codex, it carries a code that unlocks the Orks rules in the Warhammer 40,000 app.

Codex: Space Marines 11th Edition Release Date

Codex: Space Marines went up for pre-order on Saturday, September 19, 2026, with a street date of Saturday, October 3, 2026. It is the second codex of 11th Edition, following Orks, and runs 232 pages. 

Codex: Adeptus Custodes 11th Edition Release Date

Codex: Adeptus Custodes goes up for pre-order on Saturday, October 3rd, 2026, with a street date of Saturday, October 17th, 2026.

It’s the third codex now for 11th Edition, after Orks and Space Marines, with pre-orders opening the week of September 28, 2026. Our Adeptus Custodes codex review covers the full rules.

Rumors and Predictions: 11th Edition Warhammer 40k Codex Release Schedule 2026

The Rumored 11th Edition 40k Codex Roadmap is Getting Interesting

With 11th edition underway, Games Workshop has only confirmed three codexes so far: Orks, Space Marines, and Adeptus Custodes. There’s still no official 40k codex roadmap, but new rumors are starting to sketch out what could come next, and one part of that rumor chain has already landed.

Adeptus Custodes were previously rumored for an early release and have since been confirmed for pre-order, which gives the rest of the list at least a little more weight. T’au are reportedly next in line as the fourth 11th edition codex, potentially arriving in January 2027 alongside refreshed Crisis Suits and a new Broadside.

After that, things get fuzzier. Drukhari and Tyranids are both being mentioned for the fifth codex slot. Drukhari rumors include the return of Asdrubael Vect on a barge, updated Kabalite Warriors, and possibly a reworked barge kit. Tyranids have a bigger rumored refresh floating around, with new Carnifexes, Tyranid Warriors, and Gargoyles all mentioned, although getting all three at once would be a pretty chunky release.

Blood Angels and Black Templars are also rumored to receive codex supplements sometime in 2027. Blood Angels rumors currently center on a new Corbulo, while the Black Templars side is mostly speculation, including Terminator Sword Brethren, characters in Terminator Armor, and even a faction-specific Dreadnought.

The odd faction out right now is Chaos. Nothing in the rumored early roadmap puts Chaos near the front of the line, potentially leaving Chaos Space Marines waiting until spring or summer 2027. Rumors there include new Terminator characters, Chaos Bikers, and even Doomrider, with the generic Chaos Space Marines codex expected to show up before the individual Traitor Legion books.

None of this is locked in until GW actually says so, but Custodes being confirmed now makes the rumored order a lot more interesting than it was a few weeks ago. 

40k 11th Edition Codex Release Order Predictions

Unlike the rumors above, the logic of the following codex release order is based on pattern predictions, not promises. Games Workshop will happily shift windows around campaign books, production realities, and sync up model waves where it makes sense.

• Marines secure the 11th edition beachhead, then supplements drip-feed hype. GW loves opening a new edition with Space Marines, then keeping the poster boys in the conversation with chapter books and add-ons, while the wider range catches up.
• “Balance the buffet” cadence: Imperium, Chaos, then a Xenos anchor. They tend to trade punches between big Imperium and Chaos beats, then drop a Xenos book every few stops to prevent the meta from tipping into one-faction whiplash.
• Big metas happen early; weird stuff hits later on. Early books are usually broad, foundational factions that set the tone. Niche or timing-dependent ranges (Agents, Deathwatch, sometimes Drukhari or GSC) slide around to fill gaps or line up with model waves and campaign arcs.

40k Codex Roadmap: How the Last Three Editions Rolled Out

8th Edition 40k (2017–2020)

In 8th edition, GW hit the gas right after the Index books. Space Marines opened the edition with Dark Imperium, then came Chaos Space Marines, Grey Knights, Astra Militarum, and a steady march of Xenos like Craftworld Aeldari, Tyranids, Orks, and Necrons.

Supplements and chapter books kept Marine fans busy while AdMech, Sisters, and the rest of the Imperium filled in. By late 2019, Marines circled back for a big rules refresh, and with the Psychic Awakening supplements, the stage was set for ninth.

8th edition pattern takeaway: new editions usually kick off with Space Marines and a couple of big tent books, then Xenos and the rest of the field roll in steadily. Marine refreshes and event-style supplements often land late to tee up the next edition.

9th Edition Warhammer Codexes (2020–2023)

9th was the “stop-and-start edition”, mostly because COVID messed with cadence, but the sequence still followed GW’s usual instincts. Space Marines and Necrons anchored the opener, then GW worked through a mix of Chaos and hot Xenos releases that kept the meta from camping in one corner for too long.

Once the pipeline really got moving, you saw that mid-edition surge where multiple headliners landed close together, then a late-cycle stack of Chaos and boarding action releases right before tenth showed up to wipe the slate clean.

9th edition pattern takeaway: when GW has a new edition to sell, they front-load broad, popular factions, then use mid-cycle headline Xenos and Chaos books to shake the meta, and finish with spicy releases and supplements right before the next reset.

10th Edition 40k Codex Books (2023–2025)

Pace and structure returned to the 40k codex release schedule with 10th edition. Tyranids and Space Marines set the tone in Leviathan, then AdMech, Necrons, and Dark Angels landed early in 2024. Spring featured T’au Empire, Custodes, and Orks.

The back half saw Chaos Space Marines, Sororitas, Genestealer Cults, Blood Angels, and Astra Militarum, with Aeldari and Emperor’s Children positioned for late-cycle fireworks.

The 10th edition cycle looks set to close with Space Marine updates and a final nod to Drukhari before the new lore supplements start dropping, leading into 11th.

From here, late-cycle support often shifts to supplements and PDFs rather than full codex releases.

So, What Does That Predict for the 11th Edition 40k Codex Roadmap?

• Confidence is your “how hard to bet” meter. High is pattern plus product logic. Medium is “fits the cycle, could slide.” Low is “this fills a gap if the release train needs padding.”
• Treat the table like a rhythm, not a calendar. The 11th Edition Launch and the first few drops are the real anchors. After that, GW starts playing Tetris with production, campaign books, and model waves.
• Watch the rotation, because GW rarely lets one lane dominate for long. Big Imperium and Chaos books usually trade punches, and a Xenos release shows up every few stops, so the meta does not go full one-note.
• Marine supplements are the hype lever. When GW wants Space Marines in the spotlight without dumping another full codex into the same quarter, a chapter book shows up and does the job.
• Late windows are the squishy ones. Knights often make a tidy closer, and the more flexible factions can get bumped around to plug holes or line up with whatever narrative arc GW is pushing.

10th Edition Roadmap: How GW Paced Tenth Edition Codexes

Here is a brief rundown of how the tenth edition 40k codex release schedule shook out so far.

• Imperial Agents was the surprise “gotcha” moment with a big rules drop, shiny new toys, and a reminder that GW will happily swerve the schedule the second it suits them.
• Army boxes keep working like early warning sirens. If your faction gets a boxed push, the rules support usually is not far behind.
• PDF supplements turned into the pressure-release valve. Chapters and subfactions can get real updates without eating a full codex slot.
• Once the late-cycle vibe kicks in, it’s basically “wrap this up and tee up the next thing.” When campaign releases and lore supplements start dropping, that’s GW rotating the spotlight toward the next edition launch.

Confirmed 10th Edition Codex Release Schedule (2023–2026)

Here are the confirmed codex dates and rules drops so far for tenth edition, laid out faction by faction. Use this as your quick “what landed when” 40k codex roadmap reference before you start making buy or list decisions.

Warhammer 40k Codex Release Dates by Faction

Jump By Year: 2026 | 2025 | 2023–24

Don’t forget that you can access all these new 40k rules on both the Warhammer App and Wahapedia.

Upcoming 10th Edition Codex Roadmap

Confirmed vs teased: Confirmed means official preorder, release, or download. “On the horizon” means it has been teased or announced without a locked date.

What matters here is not the lore hype; it’s what these supplements do to the calendar. Once GW pivots into campaign books, it usually means fewer full codex books and more bridge content that carries the game into the next edition.

If we’re heading into a late-cycle supplement run, expect codex timing to get shaped by narrative releases and model waves, as we saw with Arks of Omen or Psychic Awakening (not by a neat faction rotation)

The Final Codex Books of 10th Edition (official)

• Armageddon, the last supplement, set the theme for the new 11th edition starter set with an April 2026 release.
• The Eye of Terror (Confirmed, released March 2026)
• The Maelstrom  (Confirmed, released February 2026)
• 500 Worlds book for Titus (Confirmed, released January 2026)

Impact of 9th Edition on 10th Edition Codex Books and Rules

Before you go digging out that 9th edition book and trying to make it basically work, here’s the quick reality check. 10th Edition was a hard reset, so codex timing matters because it decides when your faction moves from Index training wheels to the full rules kit.

This mini-FAQ keeps it simple so you know what is legal, what actually matters, and what to expect when 11th eventually shows up.

• Do 9th edition codexes still work in 10th? No. 10th Edition reset the rules baseline, so your ninth book is basically lore and art now.
• What do you use instead? Your faction’s Index or current codex, plus the latest digital updates like FAQs and balance changes.
• What happens in 11th? Generally, every other edition, GW does a big hard reset of the rules. 11th Edition is more of a soft reset compared to the hard reset of the 10th. Where core rules are just tweaked, codices can cross over via a PDF update until their new codex is released.

For the official current rules hub, start with Warhammer Community Downloads page.

FAQ: Warhammer 40k 11th Edition Codex Questions

Q: What is a Warhammer 40k codex?

A: A codex is your faction’s full rules package for the current edition, and it is usually the moment your army levels up from Index basics into its real toolset. That’s why release timing matters, because it can change how your army plays, what is efficient, and what you should be building next.

Q: Do you need a codex to play Warhammer 40k?

A: Not strictly. You can run games with just the free rules and datasheets GW puts out, or by using Wahapedia, but a codex gives you the full toolbox of faction rules, stratagems, relics, and lore. If you want the complete experience, the codex is the way to go.

Q: Will my 10th Edition Codex still work in Warhammer 40k 11th Edition?

A: Yes. Games Workshop has said that current codexes and faction rules will still be valid when Warhammer 40k 11th Edition launches, so your army book isn’t getting tossed into the warp right away.

Q: Do I need to buy a new Codex for Warhammer 40k 11th Edition right away?

A: No, not immediately. You can keep using your current Codex until your faction gets a new 11th Edition book. So, unless you just really like buying rulebooks, you’re safe for now.

Q: Are Warhammer 40k campaign supplement rules still valid in 11th Edition?

A: Yes. GW said campaign supplement rules will be valid in 11th Edition, including books like Armageddon: Return of Yarrick.

Q: What happens when my faction gets an 11th Edition Codex?

A: Once your faction gets a new 11th Edition Codex, that book will likely replace your older rules. Until then, your current Codex should keep doing its job on the tabletop.

Q: Is Warhammer 40k 11th Edition a full rules reset?

A: Not based on what’s been shown so far. Warhammer 40k 11th Edition looks more like a refinement of the current game, with updates to detachments, terrain, objectives, and game flow rather than a scorched-earth reset.

Q: Do I need a new Codex if I have an Index? (10th Edition)

Short answer: Yes.

Long answer: The Indexes were an awesome (and free!) starting point for players, packed with basic rules to get armies rolling when tenth edition launched. However, as each codex is released, it replaces the Index for that faction.

Codexes bring out each faction’s personality with new abilities, lore, and a sharper edge in the rules department. Think of the Indexes as a sampler platter and the codex as the full banquet. If you’re serious about wielding your faction’s full tactical might, the codex is where it’s at.

Q: How were Codexes updated in 10th Edition?

A: Games Workshop has a system in place. Each codex release is tailored to match the streamlined mechanics of tenth edition, focusing on simplification without losing depth. Once a codex is out, it’s also backed by digital updates, like Balance Dataslates, FAQs, and Faction Packs, ensuring players stay current without scrambling for entirely new books every few months.

Plus, with the My Warhammer app, digital codes found in the back of the codexes mean players get updates directly in their app, no hunting required.

Q: How Do You Redeem Warhammer 40k Codex Codes?

A: Use the code printed in the codex inside the 40k app under the redeem option, tied to your My Warhammer account. Codes are one-use, so do not share them.

There are also plenty of free third-party army builders (like Battlescribe or New Recruit) and the awesome Wahapedia tenth edition reference guide, which you can use as well to make army lists.

Q: Are Warhammer 40k Codexes Worth Buying?

A: If you already play that faction, yes. The codex is the only place you get the full toolbox of faction rules, detachments, stratagems, relics and lore in one book, plus the code that unlocks those rules in the app. If you are still picking an army, the free core rules and faction packs will keep you playing until your book arrives.

Q: How Many Warhammer 40k Codexes Are There?

A: The count resets with every edition, because a new edition retires the old books. Eleventh Edition began with Codex: Orks on September 5, 2026, followed by Codex: Space Marines on October 3, 2026, with Codex: Adeptus Custodes third in line. The full Tenth Edition list, faction by faction, is in the release tables further up this page. 

Final Thoughts: Warhammer 40k Codex Release Schedule Tracker and 11th Edition Predictions

GW’s Warhammer 40k codex release schedules always look neat and tidy on paper, right up until a campaign book drops or an army box shows up, and the whole timeline does a sharp left turn. 

How to Use This Article

• Bookmark it: the “Last updated” line tells you if this page is current.
• Plan off confirmed first: use official preorders, releases, and downloads for purchases and list-building.
• Use predictions as guidance only: good for hobby pacing, not a reason to panic-buy.

Two moves you can make right now to get ready for Codex releases for Eleventh Edition 40k:

• If your faction is high confidence early, start building and painting the evergreen staples first, and skip the panic-buying on niche tech until the codex is actually in hand.
• If your faction is low confidence or probably late, keep rolling with your Index and put your money into flexible, always-useful units and transports. Those survive rules shake-ups way better than cute one-trick combos.

Overall, use this codex roadmap to plan your hobby and your buys, just don’t get emotionally attached to any single month’s new releases or rules updates.

🔗 Related Reads:

• New 40k 11th Edition Rules: Rumors, Reveals + Predictions
• 40k 11th Edition Starter Set and Three-Year Release Plan
• 11th Edition 40k Q&A Reveals Big Changes for 2026
• The Big Summer Warhammer Preview: GW Has to Go All-In
• New Models 40k Release Schedule Roadmap
• 11th Edition Space Marines Faction Packs
• Best Warhammer 40k Armies Now

Are you excited about the new 11th edition 40k codex roadmap for 2026 and the 40k Games Workshop release schedule?

PREV ARTICLE

« New Custodes Codex, Aquilon Terminators: Pre-Order Pricing & Lineup Revealed

NEXT ARTICLE

A Quill of War: New Warhammer Rumor Engine »