Dragon Ball Z: Battle of Z has been available worldwide since January for PS3, Xbox 360, and PS Vita. However, the DLC characters and the option for Japanese voices have been exclusive to the PS3 and Xbox 360 versions of the title, but PS Vita owners won't have to wait much longer to have access to these additions.
Namco Bandai has announced today that a free DLC, which will include the option to play the game with Japanese voices, is coming soon to the PS Vita, although no specific release date was revealed. At the moment, nothing was mentioned regarding the DLC characters such as Super Saiyan Bardock.
Dragon Ball Z: Battle of Z is the latest entry in the Dragon Ball Z series, featuring team-based combat up to 8 players, cooperative battles up to 4 players, over 70 playable characters, character customization, and a story mode with over 60 missions.