You can change the settings to make it English or Japanese like in Dragon Ball Raging Blast
because dbz raging blast is japinesse
yes
No he isn't.
No, as far as I know there is no Dragonball GT game for PS3. But there was Dragonball Z Burstlimit, Raging Blast, and Raging Blast 2. They include GT characters.
it will come out in fall
yes November 2nd
yes there are a few
No only up to ss3.
it is coming out November 2nd 2010
No, but I think Dragonball Raging Blast 2 has Goku Super Saiyan 4.
you can play with up to 16 people but you will need 16 controls
since Raging Blast 2 is based solely on Dragonball Z, the highest is ssj3. ssj4 was introduced in GT, which unfortunately is not in the game.