The Horus Heresy is back, as Forgeworld is about to release the Age of Darkness Rulebook.
via Forgeworld and the Warhammer Community
https://www.warhammer-community.com/2017/12/19/horus-heresy-age-darkness-rulebook-coming-soon/
After a brief delay, we’re very happy to announce that The Horus Heresy: Age of Darkness Rulebook is back on track, and you won’t have to wait long to get your hands on it. In fact, you’ll be able to order your copy this year (that’s right, within the next 11 days)!
The Age of Darkness Rulebook is your essential companion to playing games set in the war-torn age of the Horus Heresy using a range of Forge World and Citadel miniatures. Inside, you’ll find rules adapted from the previous edition of Warhammer 40,000, updated based on player feedback and frequently asked questions. There’s also a plethora of reference material, including missions, weapon profiles and special rules aimed at making the lives of Horus Heresy gamers a bit easier. The book also features rules, formatting and styling consistent with that of Forge World’s other Horus Heresy volumes, meaning it’ll look right at home on the shelves alongside both your army lists and your campaign books.