Nathen over at joemadfan.com got an E-Mail reply from Joe the other day about what's up:
"Joe Mad! has written me back and has said a few things.
1. He is still doing 6 covers for the Darkstalkers series, but they're not in a row.
2. The Street Fighter back up story will NOT be in issue #13 and he's not sure what issue it will be in.
3. NcSoft wants to wait before revealing anything about the new project that he is working on and he's guessing but it might be up to 6 months before we get to see anything for it. He said he might be able to share some things sooner, but it will still be sometime before that can happen.
I will update when I hear more."
There you have it! Thanks to Nathen we now see what to expect from Joe Mad! in the next while.