Catherine: Full Body is an enhanced and expanded remake of the strange PlayStation 3 puzzler, and it's coming to PlayStation 4 and PS Vita next year. It adds new endings, new scenes, new gameplay options, and, perhaps most importantly, a new character named Rin.
Alongside Catherine and Katherine, Rin seems to be the third candidate vying for main character Vincent's affection. Rin's also the focal point of the title's first trailer, which already has people speculating over what's shown. We won't go over the details here -- just give it a watch and you'll see what we mean.
The video also attaches a vague release window to Full Body -- at least in Japan. It'll be launching over there in Winter 2018, so... It's a while off yet.