[left to right: Takashi Miike, Saki Takaoka, Kazuki Kitamura, Natsuo, Saeko, and Shun Shioya]
Thanks to ScreenAnarchy's own logboy for bringing the following to my attention: The official website for Takashi Miike's Ryû ga gotoku: gekijô-ban is online, although at present it's just a home page.
The screenplay for Ryû ga gotoku: gekijô-ban was written by Masashi Sogo, based on Sega Corporation's PlayStation 2 game Yakuza (Ryû ga gotoku). The movie's cast apparently includes Kazuki Kitamura, Natsuo, Saki Takaoka, Shun Shioya, Saeko, Gorô Kishitani, Shô Aikawa, Haruhiko Katô, and Ken'ichi Endô.
Toei Company Ltd. (Tôei K.K.) plans to release Ryû ga gotoku: gekijô-ban theatrically in Japan in March of next year.
Ryû ga gotoku: gekijô-ban official website