At E3 2018, Team Ninja announced that it will be releasing Nioh 2 sometime in the near future on PS4.
No other information has been given about the game but a small teaser trailer was shown. There’s no doubt the game will be just as challenging as the first one.
The first Nioh came out February 2017 so it’s possible we won’t be seeing the sequel until 2019 at the earliest.