Kingdom Under Fire 2 Western Release Time Is Between Late 2017 and Early 2018
Blueside also confirmed before that they will launch the PC and PS4 versions simultaneously in the west. So the game will be coming to NA and EU market between late 2017 and early 2018.
On the other hand, the developer also showed one of the Kingdom Under Fire mobile games at the conference. It's an action mobile RPG being developed by a group of ex-developers that worked on EvilBane: Rise of Ravens (called Raven in Korea) before. Only one image of the game is available currently.
Another 2 more KUF mobile games are also in development and each of them aims at a particular genre.