Elseforum, I have seen it suggested that EH only ever intended to publish a few books (like, the 3 they *did* publish; then DFAccelerated (dunno if the "Accelerated" line was on their radar, at the time they were producing the OW/YS original DFRPG duology) and then stop the DFRPG line.
Does anyone know if this is correct, and if so why??!? Apparently, it was being very successful for them, among their best-selling games; there doesn't seem like an obvious market reason to drop a successful line!
At the least, it seems like another RPG volume per every 4-5 novels might see a pretty good market...
But I am neither Evil Hat, nor Jim Butcher; and there may be considerations that escape me.