Has Ono hinted Ultra Street Fighter IV on PS4 or is he trolling?

Yoshinori Ono is well-known in the industry for his role as a producer at Capcom. The Japanese was the person in charge for Street Fighter IV and the next upgrades for that game. Sometimes this eccentric character uses to troll the whole internet uploading pictures upon different topics. This time, Ono has posted this pic in his Twitter account:

Is he teasing Ultra Street Fighter IV for PS4? Maybe or maybe he is having a good time at the expense of ours.

Thanks, Neo-GAF.