From the announcement:
On Advance Order today is Crusade of Fire, a brand new full-colour hardcover campaign book for Warhammer 40,000.
Crusade of Fire enables you to join the campaign to control the Corvus Sub-sector. Whether you choose to join the Crusade of Fire itself, the foul Servants of Ruin or the bloodthirsty Prophets of Fire, the fate of the sub-sector lies in your hands. The 96-page book comes with exclusive artwork, battle reports, army showcases, and dynamic rules that can be used in any Warhammer 40,000 game - including expanded rules for Flyers.
Head over to games-workshop.com today to secure your copy of Crusade of Fire.