A scan from V-Jump confirms Sasuke and Suigetsu are playable characters in Naruto Shippuden: Ultimate Ninja Impact. The magazine shows the two characters battling Killer Bee in his 8-tails form. During this fight, players enter button commands similar to the Ultimate Ninja Storm series.
CyberConnect2 is developing this PSP game, but it isn’t a one-on-one fighting game. Naruto Shippuden: Ultimate Ninja Impact is a brawler and screenshots show Sage Naruto engaged in a fight with over a dozen enemies.
Naruto Shippuden: Ultimate Ninja Impact is slated for release this fall in Japan. Namco Bandai has not announced the game for North America, but trademarked the subtitle Ultimate Ninja Impact suggesting a future announcement.
Thanks to Shinsu Yokoshimi for the tip in the comments! (Next time send us an e-mail :P)