I only got to see one page of Creatures Anathema at HeroCon but I know for a fact there will be more varieties of Servitors, mainly for Heretck varieties. But it looks like a very sleek book in the style of what we have already seen.
think Im going to lean toward a adventure based on Grox next time. Last nights session was based on a heretek who used street gangs to "scavenge" parts and series of professional pit fights to gather "bodies" to make various styles of servitors to sell to mercenaries, security agencies and even a cult of slaneesh.
The adventure before that involved the pit fights and the cult of slaneesh. So Im hoping for some good critters in this book to spice up the typical scenario so far. We have eldar (partly) in PtU. But Id like to see some orks, tau (kroot) and other classics, and some originals as long as they are interesting and fit.
Maybe FFG will give legs to the Demiurge finally?