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Warhammer 40k Codex release dates

All the Warhammer 40k 10th edition codex release dates revealed so far, and a rundown of the Codexes that have released so far for Warhammer 40k.

Warhammer 40k codex release dates guide - Games Workshop image showing the new 10th edition Dark Angels codex, on a blue hex pattern background

Games Workshop has revealed the initial road map for Warhammer 40k codex army books for 10th edition Warhammer 40k, but there are still many armies waiting for new rules. This guide tracks all the codex release dates revealed so far, and everything we know about them.

This is a vital resource for existing 40k fans waiting for news on their favorite Warhammer 40k factions, but if you’re new to Games Workshop’s premier sci-fi miniature wargame, have no fear – our expert guides can help. What is Warhammer 40k is a good place to start, and we’ve got a rundown of the best Warhammer 40k starter set for your needs, too. You’ll find lots more at our Warhammer 40k homepage.

For now, though, let’s run through the latest official codex rulebooks – some already released, some scheduled, and others as yet mired in mystery. You can click the links below to find the info you need:

Warhammer 40k codex release dates guide - Wargamer image showing a row of Warhammer 40k codex books on a shelf

What are Warhammer 40k codex books?

Codexes are the traditional home for the rules for each Warhammer 40k faction, though Warhammer 40k 10th edition launched with a full set of free ‘Index’ rules for each army.

As Codexes are released, they supercede the Index, updating rules and points, and adding new Warhammer 40k detachments that give you alternative ways to build your army that will reward you with new abilities, enhancements, and 40k Stratagems

Warhammer 40k Codex Tyranids, a large format book with a picture of a multi-armed alien warlord on the cover

Confirmed 10th edition codex release dates

Of the at least 22 10th edition codexes we expect to arrive over the next two and a half years, only five have yet been released. Here’s a table showing all the codexes announced so far:

Codex Release date
Tyranids September 9 2023
Space Marines October 7 2023
Necrons December 9 2023
Adeptus Mechanicus December 9 2023
Dark Angels March 9 2024
T’au Empire (Early access inside Kroot battleforce, March 23 2024)
Orks April 20 2024
Adeptus Custodes April 20 2024

Codex Space Marines and Codex Tyranids came out in Fall 2023, with Codex Tyranids coming first. Codex Necrons and Codex Adeptus Mechanicus followed during Winter 2023.

Codex Supplement Dark Angels first arrived as part of the Deathwing Assault boxset that dropped on February 3, 2024. The standalone codex copies went to pre-order on February 24, and hit shelves on March 9.

If you’re wondering when a particular Codex released during 9th edition 40k, check out our guide to 9th edition Codexes

Warhammer 40k codex release dates guide - Games workshop image showing the special edition cover art of the new Tau Empire 10th edition codex book

Which 10th edition codexes are coming next?

Games Workshop has confirmed the next upcoming Warhammer 40k codexes to release will be the Tau Empire, Adeptus Custodes, and Orks – with pre-orders starting on April 13 2024.

Beyond them, we’ve many more 10th edition codexes still to come. Wargamer will be keeping our auspexes trained on GW for any hint of a renewed 10th edition codex roadmap. In the meantime, here’s a list of all the armies still awaiting new rules:

Codex Release date
Sisters of Battle (Adepta Sororitas) Unknown
Astra Militarum Unknown
Grey Knights Unknown
Imperial Knights Unknown
Chaos Space Marines Unknown
Death Guard Unknown
World Eaters Unknown
Thousand Sons Unknown
Chaos Daemons Unknown
Chaos Knights Unknown
Aeldari Unknown
Drukhari Unknown
Genestealer Cults Unknown
Leagues of Votann Unknown

Warhammer 40k Codex Code example

How do I redeem Warhammer 40k Codex codes?

You’ll find a unique Warhammer 40k Codex code in the back of each printed Codex. You can register this code on your MyWarhammer account, which will in turn unlock all the datasheets and Detachments from the Codex in the Warhammer 40k app.

You can then use that data in the Battle Forge army builder. You will be limited to just one army list at a time in the app, unless you also have a Warhammer+ subscription.