Before I begin the speculation, let me bring everyone up to speed. Not too long ago, gamers discovered that Nintendo had registered supermario4.com. When you go there, it redirects you to Nintendo’s country selector. Now normally when you enter some bonkers domain name, either you’ll go to a “domain not found” page, or a page from a domain squatter. But here, you can see that Super Mario 4 is most certainly Nintendo’s. Then in an interview with Korean site Betanews, Miyamoto confirmed that his team was in fact making Super Mario 4 for the Wii U. However, he didn’t specify what exactly this new Mario game would be: a 3D or 2D platformer. Here’s where we start guessing what this could be.
The Wired Fish Network 