Two new scans from V-Jump magazine confirm ANBU Kakashi, Rock Lee, and Sakura in Naruto Shippuden: Gekitou Ninja Taisen Special for the Nintendo Wii. GNTSP, as it could be abbreviated, is scheduled to come out in Japan on December 02, 2010.
Naruto Shippuden: Gekitou Ninja Taisen Special will feature 41 playable characters, including Sage Naruto, Sasuke, and Jiraiya as well as online play. No plans for this game or a Naruto Shippuden: Clash of Ninja Revolution 4 for the United States have been announced at this time.
Thanks to des in the Anime Games Online Forums for these!