Capcom producer Yoshinori Ono (Street Fighter IV) is working on an “unreleased title” for the PlayStation 4. This is separate from Deep Down, as mentioned so in his LinkedIn profile.
Also of note, earlier in the week, Ono resigned from his post at Capcom Game Studio Vancouver (Dead Rising 3). However, Ono will remain as a corporate officer and the Head of Consumer Games Development Division #2 at the publisher.
Unfortunately, no release date has been listed for the unannounced game. But could it be Street Fighter V, whose existence was confirmed by Capcom CEO Haruhiro Tsujimoto? Could this unannounced game be revealed at this year’s Tokyo Game Show?