The site says that it will provide a 360 degrees of pirate experience. The site has also 2 screenshots to share. According to the site, the screenshot is to illustrate how you can attack the enemy with your fellow crew, and also communicate with your fellow pirate crew members.
It is also suggested that the title is a one day voyage as a member of the crew.
The site states that there will be 8 players co-op, and the title will be up for trial at an upcoming event on July 22nd, as part of the Tokyo One Piece Tower event at Tokyo Tower.
No release detail has been announced yet