Square Enix have revealed a teaser site for an upcoming PS4 exclusive, titled "Project Code Z". There's not much to go on at the moment other than a couple of images which gives us a vague hint towards what we can expect. More information is due to come to light at the Tokaigi Japan Game Party 2015 which is taking place in a few days time on the 31st January. Be sure to keep an eye out!
Source
Teaser Site