Just a bit of idle speculation really, and certainly I have bugger all to back it up beyond that....
So Warhammer Forge is apparently on the back burner, and has been for a while.
Could End Times be the cause? I mean it's a pretty major shake up of the lore, so it does make sense to hold development on spangles until the Design Studio had finished their grand plan.
Just a bit speculation like I said. Thoughts?