Idea Factory International announced that Mary Skelter 2 Switch version is coming to the west! The game will come digitally via Nintendo eShop. The game was also announced for Switch in Japan back in March, but no release date has been given. The PS4 version itself experienced a delay previously, it comes with bonuses though.
IF International stated that this western version will come with features that are in the Japanese version, including the full Mary Skelter: Nightmares. You can read about Mary Skelter: Nightmares here. In addition, the game will feature English and Japanese dual audio and English subtitles.