Namco Bandai has just announced a PlayStation 3 fighting game based on Jojo's Bizarre Adventure. The game is being developed by CyberConnect2, which is responsible for the Naruto Shippuden series of fighting games and Asura's Wrath.
The announcement of the game was made in conjunction with a press conference revealing an anime adaptation of Jojo's Bizarre Adventure, which is slated to be broadcast in Japan this October.
Jojo's Bizarre Adventure All Star Battle is only confirmed for release in Japan, but there's a good chance it'll see release internationally.
Keep an eye out for this one.