The undoubted most-interesting most-underrated character in the Horus Heresy novels is Ahriman of the Thousand Sons. Now, in the Warhammer 40K timeline, we have the new Ahriman: Undying novel. This is available in both hardback and Limited Edition formats.
Unrivalled combat mistress, Lelith Hesperax is here with her new novel Lelith Hesperax: Queen of Knives. Games Workshop have this listed as a hardcover this week, but in Australia and New Zealand it's just the Limited Edition version for now.
The already-sold out Morvenn Vahl: Spear of Faith Mega Limited Edition is up this weekend, following the tried and true format of the Emperor's Spears collection from some years ago. Limited to 1,750 copies and presented in a magnetic-enclosure box, the hardback novel is accompanied by 56-page cloth-bound book, The Book of Saints, telling selected short stories of Adeptus Sororitas legends, plus there's six postcard-sized art prints showing artwork from The Book of Saints.
Paperbacks this week see the return of Fall of Cadia for the 1500th time, and the Mechanicus vs. Emperor's Children Cultists in Genefather.