Idea Factory has dated Mary Skelter: Nightmares:

LOS ANGELES, CA., August 2, 2017 – Conquer your worst fears and nightmares in Mary Skelter™: Nightmares, Idea Factory International’s latest dungeon-crawling RPG, coming to the PlayStation®Vita system this September 19 (NA) and September 22 (EU)! It will be available as a digital and a physical release and compatible with the PlayStation®TV.