https://www.gamespot.com/articles/final-fantasy-15s-noctis-dlc-in-tekken-7-releases-/1100-6457400/

As previously announced, Final Fantasy XV protagonist Noctis is set to be the next playable DLC character in Tekken 7. The original announcement pegged him for a Spring 2018 release, and it turns out his arrival is right around the corner on PS4, Xbox One, and PC.