Bandai Namco released a few days ago a gameplay trailer of the upcoming 3DS title Dragon Ball Z: Extreme Butoden featuring two additional NPC assists in matches for a total of a team of four fighters per player.
The 8-minute gameplay video shows various moves, combos, and special attacks by Goku, Vegeta and other characters.
The game is being made by Arc System Works (developer of Guilty Gear, Persona Arena and BlazBlue series of games).
V-Jump Magazine previously announced Super Saiyan God Goku (from the anime film Dragon Ball Z: Resurrection of ‘F’) will be among the available characters in the game.
The game will make its debut in Japan on June 11. No mention of the release of the game outside Japan yet.
[Source]: GeekSnack.com: Dragon Ball Z: Extreme Butoden Receives 8 Minute Long Gameplay Video.