It’s been confirmed! Naruto Shippuden: Ultimate Ninja Storm 2 will be covering the Hidan and Kakuzu arc!
The scan from Shonen Jump shows Naruto battling against Hidan and Kakuzu. It seems the external beings created from Kakuzu’s hearts will make some kind of appearance. The scan also indicates online play, which was confirmed by Namco Bandai Games of America a few weeks ago. Not much else is said, and it is unknown whether or not the game will go past the Hidan and Kakuzu arc.