Update: Read a message from the game’s designers here.
During Nintendo Direct, Satoru Iwata announced Bandai Namco Games is developing the next Smash Brothers title for Wii U and Nintendo 3DS.
Yoshito Higuchi who worked on Tales of Vesperia is the game’s director. Masaya Kobayashi, one of the staff members from Go Vacation, is the director of Smash Brothers for Wii U and 3DS.