At the Square Enix E3 2018 press conference, Babylon’s Fall, a new game from PlatinumGames, was revealed. The new IP will be heading to the PS4 and Steam, with no other information on its availability on other platforms. Babylon’s Fall will release in 2019.
Bill Lavoy posted a new article, E3 2018: Babylon's Fall, New IP from PlatinumGames, Coming 2019
Looks like the Lord of the Zelda Souls