Looks like the cat may have been let out of the bag over the weekend at the Forge World Seminar about a new chapter of Space Marines.
According to Battle Bunnies apparently in the new Horus Heresy: Conquest (Book 4) there is a picture titled “Black Shield Space Marine” that Alan Bligh showed off at the event.
It may also be the “origin” of the mysterious black Space Marine that was seen at the European open day as well! -MBG
Checkout all the other rumors and spoilers from Warhammer Fest HERE!