A brand new V-Jump scan of One Piece: Gigant Battle 2: New World has been released! It may be tough to see in the screenshots, but the Japanese text confirms confirms Wapol and Vivi as playable characters!
One Piece: Gigant Battle 2: New World (also known as One Piece: Gigant Battle 2: Shin Sekai) is a 4-player action game for the Nintendo DS featuring over 40 playable characters! The game is being developed by Ganbarion, the One Piece: Unlimited Cruise SP team, and will be published by Namco Bandai Games this fall in Japan. There is no word on a North American or European release date at this time.