The other game announced is One Piece: Grand Cruise!
A specific release date for One Piece: Grand Cruise and One Piece: World Seeker have not yet been announced, but they will both be out sometime in 2018.
The first is One Piece: World Seeker, which will be on PS4, Xbox One, and PC.
Bandai Namco Entertainment announced today there will be two One Piece coming West to North America and Europe.