With Nintendo's conference just hours away many rumors and "confirmed" (more rumors) are spreading like crazy. So we'll find out tomorrow with whats true and whats not.
New Wii to me announced codenamed Wii Hi-Fi to have similar graphics to Xbox 360 and PS3. Personally I think this is a lie due to one new system being announced (3DS)
A Animal Crossing for the 3DS. No one knows about any 3DS launch games so it could be true.
Retro Studios is working on a new Donkey Kong game.
Supposedly "leaked" photo of 3DS prototype (pictured below).