Something new from the Black Library is coming, and its going to involve the Imperial Fists and Ultramarines fighting side by side. There is also a third chapter of some sort, with the jump packs in the center image above. So check out the teaser image and information compiled from the Warhammer App and the Black Library website.
From the Black Library
http://www.blacklibrary.com/Home/the-horus-heresy-teaser.html