Super Smash Bros producer Masahiro Sakurai has told IGN that the key to the sequel will be Wii U and 3DS connectivity. Sakurai believes the game has to expand beyond just adding more content.
"I intend to change direction a little as we go," said Sakurai. "The key to that's going to be its dual support for 3DS/Wii U."
Sakurai admits that work on the game is in the early stages, but explained that the connectivity between the two systems would be a center pillar for the new experience.
"I'm really just getting started on this so it's going to take time, but I'll come up with something that uses that link as the game's central axis, so I hope you're looking forward to it," he said.