In an interview with Nintendo's Shigeru Miyamoto and Shinya Takahashi, the pair talked about 3DS and Wii U communication.
With both devices having similar control schemes, touch-screens and the like, there certainly seems to be potential for software that links the two. Some of the titles that will have a link-up in place include the new Super Smash Bros. games; where players may "want to start playing on the 3DS first and build up your characters there, and then transfer that character data over to the Wii U and play with them there," said Takahashi.
Miyamoto also discussed the technology, noting how the the company have been thinking of it, and that "there's no real reason that we haven't done it yet." Some of the ideas included a feature where the 3DS could work with Wii Fit U, and also an idea where "if there's a Wii U at home and maybe the father or the kids have a 3DS, then we might think up a system where the Wii U would know that you were home before your dog did."
The pair then confirmed that there are projects in the works that weren't announced at E3 that involve "some sort of communication between the Wii U and 3DS", with Takahashi suggesting how "we are thinking about that with Mario and Donkey Kong."
How would you like to see the 3DS and Wii U hook up?