on the Warhammer Community website. Current Books Army Codices The range of codices is regularly updated with new editions of armies and occasionally new army codices. Codices designed for a prior edition of Warhammer 40,000 are still valid in the current edition, unless a later version has replaced it. Codex Supplements have their parent faction noted in brackets. 9th Edition 9th Edition was released in July 2020. 8th Edition 8th Edition was released in June 2017. Expansions Expansions for Warhammer 40,000 provide alternative ways to play the game. Rules in expansions remain valid unless superseded by a newer publication. 9th Edition 8th Edition Imperial Armour For main article see Imperial Armour Imperial Armour is a series of official rules supplements to Warhammer 40,000 Codices produced by Forge World, a subsidiary company of Games Workshop. Current, valid books: Obsolete Books Codices 8th Edition 8th Edition was released June 2017. 7th Edition All codices were rendered obsolete by 8th edition Warhammer 40,000. 7th Edition was released May 2014. Codex Supplements have their parent faction noted in brackets. 6th Edition 6th Edition was released June 2012. Codex Supplements have their parent faction noted in brackets. 5th Edition 5th Edition was released in 2008. 4th Edition 4th Edition was released in 2004. Codex Supplements have their parent faction noted in brackets. 3rd Edition 3rd Edition was released in 1998. Codex Supplements have their parent faction noted in brackets. 2nd Edition All codices were rendered obsolete by 3rd edition Warhammer 40,000. 2nd Edition was released in 1993. Expansions/Supplements 8th Edition 7th Edition All 7th Edition expansions were superseded by 8th Edition. 6th Edition 5th Edition 4th Edition 3rd Edition Battlezone Battlezone codices were rules supplements that dealt with a specialised combat environment, instead of an army. There was only ever one produced. However, material in Codex: Catachans provides rules for jungle warfare. The concept of a battlezone codex was replaced by Games Workshop's Expansions. 3rd Edition Events The two event codices were released in association with the 2000 and 2003 Worldwide Campaigns. These codices provided background and special gaming rules for the event, along with four "supplemental army lists"; variant armies that required access to certain other codices for use. Imperial Armour References Warhammer 40,000 rule books and supplements