warhammer 40k thousand sons
Image via Games Workshop

Warhammer 40k 10th Edition codex release dates

The latest Warhammer 40k army codex releases

The original roadmap that Games Workshop introduced with the launch of Warhammer 40k 10th Edition is nearing completion. So far, Games Workshop has managed to surprise players with new rules, detachments, and even lore (female Adeptus Custodes!?) with every new release.

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In this guide, we’ll be keeping an updated list of previous and upcoming 10th Edition Codex release dates.

warhammer 40k codex roadmap 2024
Image via Games Workshop

Warhammer 40k 10th Edition Codex release schedule

Compared to previous editions, the releases are more frequent with at least 13 army codexes to be available by the end of 2024. 

CodexRelease Date
TyranidsSeptember 9, 2023
Space MarinesOctober 7, 2023
NecronsDecember 9, 2023
Adeptus MechanicusDecember 9, 2023
Dark AngelsMarch 9, 2024
OrksApril 20, 2024
Adeptus CustodesApril 20, 2024
T’au EmpireMay 11, 2024
Chaos Space MarinesMay 25, 2024
Genestealer CultsJune 22, 2024
Adeptus SororitasJune 22, 2024
Astra MilitarumTBA
Grey KnightsTBA
Death GuardTBA
Thousand SonsTBA
World EatersTBA
Chaos DaemonsTBA
DrukhariTBA
Leagues of VotannTBA
Imperial KnightsTBA
Chaos KnightsTBA
AeldariTBA

Players can find the latest releases on the official Warhammer webstore. Shortly after, the codexes can be found on Amazon from Games Workshop themselves or from other tabletop gaming stores. Games Workshop and other vendors frequently run sales on Amazon, so it’s recommended to check there before purchasing codexes from the official store (which always lists items at full price).

What are Warhammer 40k codex books? 

Warhammer 40k 10th Edition launched with a set of index rules, available for free on the Warhammer Community website. These rules allow every army to be playable but are lacking the depth and identity that codexes provide. The index rules can be seen as the outline for every army, while the codex could be considered the color and details that complete the picture. 

Army codexes are a comprehensive source specific to each faction; containing everything from lore, rules, and datasheets that form the backbone of playing each army. The identity of armies truly shines once their codex is released since thematic elements that influence the playstyle are included such as:

  • Updated or additional strategems
  • Psychic powers
  • Detachments
  • Special traits for warlords
  • Additional special army rules

When a codex is released, its rules and stats become the standard, rendering those within the index obsolete. 

Warhammer 40k codex codes and how to use them

On the back of each Warhammer 40k 10th Edition codex, you’ll find a unique code that can be registered on MyWarhammer. Doing this unlocks access to convenient online and in-app datasheets and detachment info for that codex’s respective faction within the Warhammer 40k app. This allows for easy army list building within the updated Battle Forge tool that surpasses traditional pen and paper methods. 


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Martin Ortiz
Contributing Writer - Martin has been passionate about video games and tabletop gaming since first experiencing The Legend of Zelda: Windwaker as a child. In 2022, he took the dive into writing professionally and can frequently be found playing a blue deck in Magic: The Gathering, obsessing over Skaven mini figures, or theorycrafting the next best PvP build in popular MMORPGs.