http://mynintendonews.com/2012/04/17...super-mario-4/Shigeru Miyamoto has confirmed to Korean website Betanews that Super Mario 4 is a project that his team over at Nintendo are working on. The translation is a little rough as expected as it’s not absolutely apparent whether Super Mario 4 is the Nintendo 3DS game Nintendo confirmed it’s working on or Super Mario Wii U.
“We have Mario team in company, so we are making Super Mario 4. But only I can say is, we just announced that game. More details will be revealed later.”
- Shigeru Miyamoto
I'd have to agree. It is a bit confusing on whether he is talking about the Wii U game or the 3DS one.