A PlayStation demo will be coming in just a couple days while a demo for PC and Xbox will be out next week.
You can now play the Tekken 8 demo on Steam and Xbox - Xfire
Tekken 8 Aiming for Release in Fiscal Year 2023, But Could Be
It appears that Tekken 8 is coming out in January - Xfire
Tekken 8 System Requirements: Can Your PC Run The King of Iron
Bandai Namco finds success with Tekken 8 demo release - Xfire
Tekken 8 demo delivers a total knockout of a first impression on PS5
TEKKEN 8 finally has a release date and more game modes - GadgetMatch
Tekken 8 Reportedly Removing Controversial Feature Ahead Of Launch
Tekken 8 demo: PS5 release time, roster, and all modes included
Release date 21.01.24? : r/Tekken