It probably doesn't feel like it, but the 3DS will be three years old in a couple of months (and four years since its original announcement). By 2015 or 2016, we can expect them to announce a new handheld (based on traditional product life cycles, as well as changing expectations and rapidly evolving mobile tech). What do you think their new handheld will be like?
Personally, I think they learned their lesson with the 3DS (and Wii U): they cannot sell 'premium' products. The market rejects a premium handheld. Their next handheld needs to go back to the basics, a cheap, capable, sturdy handheld with great battery life. The 2DS might be an indication of where they plan on going.
But what do you see the next handheld being like? The GBA got us the clamshell/backlight/rechargeable battery, the DS got us two screens, a microphone, Wi-fi, and a camera, the 3DS got us 3D.
What will the hook of the next handheld be? A regular Nintendo handheld, no gimmicks, but HD screen? Or will it double as a smartphone/tablet? Will it be the fabled Nintendo hybrid?
What do you expect the next Nintendo handheld to be like?