This page has gone up on Big Fish:

Mystery Case Files

And it appears that MCF: Dire Grove Remastered will be released the week of Thanksgiving.

Thanks Marian! So does this mean no more new Mystery Case Files, other than the spin off games? I haven't played the first spin off game (or finished the MCF series yet). How is it any different?

I haven't played the first spin-off game either, although I have it in my Purchase History, so not sure how it might be different.

And I don't know if there will be more MCF games apart from spin-offs. We will just have to wait and see.