well, not totally. Z asked this 3 years ago in Grim Misadventures #171
and many people said Asterkarn.
So there was always a hint of some kind of area expansion in the future, maybe something like the new areas around Burrwitch and old Arkovia. I did not expect it to be a full blown DLC though. Crate once more lives up to their reputation of being a community-inspired developer.