Not one to be outdone by Atari in America, Banpresto (a subsidiary of Bandai) of Japan is currently in the process of creating their own Nintendo GameBoy Advance fighting game for the franchise! Unlike previous fighters, this will be a 3-on-3 fighter (a-la “Marvel vs. Capcom”). You can check out some early screen-shots via The Magic Box.
Note that this game is currently slated for a Japan-only release, and is in addition to Banpresto’s Japanese release of “Taiketsu” for the GBA.