Having a third party game be a console exclusive is a rare thing in this day and age. For the most part, a third party title comes out on at least two of the home consoles or, even if it is exclusive, remains so only for a limited amount of time. This makes Dissidia Final Fantasy NT somewhat unique in that Square Enix has confirmed that it will remain a PlayStation 4 exclusive.
Talking to Dualshockers at Gamescom a few weeks back, Dissidia NT producer Ichiro Hazama stated that they are not considering any other platforms at the moment. Instead they want to ensure that their relationship with Sony is honored, and that the current PlayStation 4 build of the game is perfected.
The original arcade version of the game, Dissidia Final Fantasy, runs on a PlayStation 4-based arcade board, so this may not exactly be an unexpected move. That said, other games on similar arcade hardware (e.g. Tekken 7) have made it onto other platforms. This, on top of the PlayStation 4 hardware itself being based on the x86 architecture that powers modern PCs and Microsoft’s Xbox One. However, Square Enix seems focused on refining the game on PlayStation 4 alone. As part of this, director Takeo Kujiraoka has confirmed that the game will also feature PlayStation 4 Pro support.