Only a Japanese release for the demo is currently confirmed.
The demo is a special version of the game that contains a digest of the first two days in the game, which consists of cutscenes and action puzzles. The difficulty will be set to the easiest one called “Safety,” and there will be no save transfer to the full game.
Catherine: Full Body was released for both the PS4 and PlayStation Vita in Japan, on February 14, 2019. The game was then released in South Korea and Asia on April 25, 2019 for the PS4, and the Americas and Europe on September 4, 2019 for the PS4. A Nintendo Switch port will be released in Japan, South Korea, and Asia on July 2, 2020, with the Western release on July 7, 2020.