Square Enix has announced that SaGa Scarlet Grace – Hiiro no Yabou, an enhanced version of Japan-only PlayStation Vita title SaGa Scarlet Grace, will be released in Japan on August 2, 2018. The game will be available for PC (via Steam), PlayStation 4, iOS, and Android.
SaGa Scarlet Grace was the first new mainline SaGa title in over a decade when it was originally released for PlayStation Vita in 2016. The game uses a strategic battle system and sees players choose between four protagonists, with a world and scenario that changes based on the player's choices. Hiiro no Yabou adds an extra story scenario, new voice acting, new characters, new music, and other elements. No announcement has been been made regarding a potential localisation.
Update — Squae Enix also released a new trailer, viewable below.