I'm gonna wait for Steam version
Free work is ok if it's not-commercical project, such as modding for game. If it's commercical and they're going to make money off your work then it's unfair.
This is an announcement trailer for Ashes of Ariandel – a brand new add-on for the Dark Souls III action RPG. In this DLC players will travel to a new snowy location filled with evil creatures. Fans of the series will get their hands on new weapons, spells and armor sets. Dark Souls III: Ashes of Ariandel will be available PlayStation 4, PC and Xbox One starting October 25th, 2016.
© PlayStation, 2016 YouTube Link