Beastrouille - Bolter & Chainsword
There is a leak from the french WD saying so.
The detachements are called Deathwing Strike Force and Ravenwing Strike Force.
Here is the image for those who read french:
http://i2.photobucket.com/albums/y5...gels/388177CB-365F-4820-B579-F4EA2FBE90E2.jpg
For those who do not read french here is a quick translation:
second paragraph:
"Of course this is not the only way (i.e. the Lion's blade) to assemble a DA army. Instead of a DA semi-company why not use other detachements. A DW Strike Force would make a visually impressive army with all these bone-white armours [...]. Thanks to this detachment, itis possible to field a force constutited only of DA 1st company and lead by Belial or why not the new Terminator Librarian."
Third paragraph:
"The other detachement of the codex is the RW Strike Force including units from the second company only [...]"
EDIT: I forgot to credit the one who posted that in the first place. So thanks Master Avoghai (who I am sure you know already) to have posted that on the french DA forum