At this year's BitSummit 2017 indie event in Kyoto, Japan, PlatinumGames producer, executive vice president and studio head Atsushi Inaba confirmed the studio is working on a new IP, and that it'll be made by a new game director.
PlatinumGames is known for making high-quality games in series it doesn't actually own; for instance, SEGA owns Bayonetta, and Square Enix owns the NieR franchise, and PlatinumGames has made stalwart games in both line-ups. The developer wants to change that by making a wholly-owned IP of its own so it has more creative control over the IP's direction, content, and sequel possibilities. However, this new IP will be directed by a brand new game director, not the studio's well-known games-makers.
According to Inaba, PlatinumGames' new IP is "formless and shapeless" right now, but he did hint that the studio will look at new abstract technologies for ideas. "One thing we want you to really be aware of is that there's a new formless, shapeless IP, but we can't talk about that right now. But it's really important to us," PlatinumGames exec Atsushi Inaba said during BitSummit 2017's keynote speech (stream here).