Telltale Games/WMG

The franchises Telltale will do next are...

 * Scooby Doo, possibly implementing ideas from various incarnations, most of which from Mystery Inc. The story would probably be from the perspectives of the members of Mystery Inc, and starts out as a normal Mystery, but gets more occult as it goes on.
 * My Little Pony Friendship Is Magic.

Eventually, because the fans will demand it....

 * Tell Tale will make a Doctor Who game. AND IT WILL BE AWESOME.
 * They've actually expressed interest in it, if that helps.