You won't have to worry about Tekken 8 including the anti-tamper and DRM software Denuvo. Tekken 8 director Katsuhiro Harada flat out said on Twitter that the game will not include Denuvo "or anything else" like it.
Harada made this announcement over on Twitter in response to a now-deleted tweet that showed Tekken's 8 End User License Agreement (EULA) mentions Denuvo under the third-party software category....