Book 4 of the Siege of Terra, Saturnine is written by Dan Abnett and will be high on my list. (one of my two favorite BL Authors). Here is what was revealed today from the Black Library Weekender.
via the Warhammer Community.
You can see what books were revealed coming from the Black Library at the link
https://www.warhammer-community.com/2019/11/10/black-library-weekender-2019-the-reveals/
Valerian and Aleya are the stars of Chris Wraight’s Watchers of the Throne series and they tie in to the release of the second book at the Celebration, The Regent’s Shadow.
Dan Abnett is back. Seven years after his last Horus Heresy novel, The Unremembered Empire, he’s written book 4 of the Siege of Terra, Saturnine. We’ll be bringing you more details about that soon – but for now, let’s turn to another of the original, and rightly celebrated, Horus Heresy authors, Graham McNeill. His Siege of Terra novella, Sons of the Selenar, has an absolutely glorious cover and will be coming out in Limited Edition form next year.
This novella sees the Shattered Legions heroes of the Sisypheum – as seen in Angel Exterminatus, among other stories – reach the Solar System and undertake a dangerous mission on Luna, Terra’s moon. It’ll bring a long-running story to a close and reveal never-before-told secrets. Look out for more detail on that soon.