Stories focusing on the shattered remains of the Legions as they realize the Warmaster has fallen.
Era of Ruin anthology leak - Page 3 - The Bolter and Chainsword next-siege-of-terra-book
Technically, the "main" numbered series is complete. However, leaks and official teasers suggest that the Black Library will continue to release "character shorts" and anthologies under the Siege of Terra banner. These stories often fill in the gaps for beloved characters who didn't get their final moment in the primary eight-book run. Why You Should Care about " Era of Ruin " Stories focusing on the shattered remains of the