December's White Dwarf mentions that the next Horus Heresy book Inferno will be here this coming month. However, it's now apparent that there is a delay in the book, and we should not expect to see it until February.
Huge thanks to Lady Atia on the War of Sigmar for grabbing the images.
https://war-of-sigmar.herokuapp.com/bloggings/1407
This is the quote from December's White Dwarf
This month sees the release of the latest highly anticipated volume of Forge World's Horus Heresy Series. The Horus Heresy: Book VII - Inferno brings the war to Prospero. No matter where your loyalties lie, there's something in this weighty tome for you.