Howdy Guys and Girls :)
via Warhammer Community
"As you’d expect, there are a lot of Space Wolves and Thousand Sons in the book, but they are not the only combatants. The Talons of the Emperor are also deployed in force (Legio Custodes and Sisters of Silence) and we also hear about some of the less well known forces, such as emissaries of the Warmaster, Mechanicus contingents and Solar Auxillia Regiments."
Can't wait to read the whole book! Stay tuned for a review in a few days :)