Project Discovery is a new IP with a "smart novel game" theme. The title is really early in development because they’re looking for scenario, character designer, voice, and music staff to work on Project Discovery. Robot (not actual robots, we’re talking about this company) will assist with creative production. Project Discovery will be released on the PlayStation Store.
The Discovery Engine Sony mentioned earlier seems to be a platform for novel or visual novel games. Kadokawa Games is also working on a PlayStation Vita dungeon RPG with Students of the Round developer Experience.