This going to read like pure copeium, but why would BoC be any different to StD, Freeguild, 'Ardboyz etc with AoS getting new sculpts and the old models remaining in production for TOW? Like Lizardmen and Skaven, Beastmen are one of those things people look at and instantly think "Games Workshop(tm) PLC" and we know how obsessed modern GW is with it's IP.
Also, we didn't get the new Beastlord that long ago. I know that doesn't necessarily save an army (Silver Tower comes to mind here), but it'd still be strange. I just can't see them going the way of the dodo.