While the outlook of a third Bone game hasn't been exactly promising since, oh, early 2006, it's always a shame to have to read something like this:
DEN: What about some of the other franchises, I know you have announced the next Sam and Max, but what about future installments of Bone, or Strong Bad?I guess if the Bone movie ever leaves the conceptual phase there's a possibility that the tides could change, but for now it's looking like the Bone cousins are stuck in the Valley evermore, at least as told within a Telltale game.
DG: There won’t be any more Bone games, our agreement ended. But Strong Bad, we liked working with the Brothers Chap. We worked very closely with them.
I guess Jeff Smith is much more into Rasl now anyway.
Unfortunately the Bone games came from the "wrong" episodic age. Too bad.