Bandai Namco announced One Piece Pirate Warriors 4 today at a panel at Anime Expo. Bandai Namco is once again teaming up with Koei Tecmo and Omega Force on the release.
They have not specified a release date yet other then 2020, but here is a first trailer and info on the game.
One Piece: Pirate Warriors 4 features the latest stories, characters and environments from the One Piece anime, including Whole Cake Island. One Piece: Pirate Warriors 4 also features “Musou” action, where players can use powerful “Musou” attacks to take on huge amounts of enemies and clear the field of battle in one fell swoop with their favorite characters.