One Piece Film: Strong World

During a showing of the Episode of the Island of Perpetual Winter, a teaser for the tenth movie was revealed, which will be released in late-2009.

What is known about the film is that it is an original story by Eiichiro Oda and is set after Thriller Bark (possibly further) as Brook is shown alongside the other Straw Hats, making this his first movie appearance. Sengoku, Garp, Shanks and Whitebeard are revealed to be in the film as well.

The movie seems to focus on Nami, who looks to have gotten herself into a situation and possibly forced to leave the Straw Hats once again to join the enemy. In this case, a figure named "Gold Lion" Shiki who, judging by the room the Straw Hats busted into, may be some sort of organization leader. The movie also seem to deal with a "Crystal" ship log.

As the movie is still in development, it possible these facts could change before its released.