Nintendo has teamed up with Namco Bandai to develop the next installment of the Super Smash Brothers Series. Along with Masahiro Sakurai, the game is being directed by Masaya Kobayashi (worked on Metal Gear Solid 4) and Yoshito Higuchi (Famous for his work in the Tales series).
Source, fast forward to 7 minutes in.
Really, this means the next Smash Brothers will most definitely have a cross over from the Tales series or another NamcoBandai franchise and the probable return of Solid Snake as a playable character.
Also, "They are building the game from Scratch". This leaves a lot of room for core mechanic changes, so Smash Bros 4 will probably be the most original installment in the series. But in what way…?