Sounds like there could be another Final Fantasy XV demo! Hajime Tabata spoke with Chinese site VG Time (via ZhugeEX) and reportedly said they’re making a new demo. Yup, another one!
Update: A Square Enix spokesperson clarified this demo to Kotaku, stating, “The demo mentioned in Hajime Tabata’s VG Time interview is in reference to the (previously announced) FINAL FANTASY XV playable tech demo, which will be available as a separate release in the future.”