What if Nintendo is planning to dual push the N3ds and the Fusion?

[Darwinianevolution]

I'm sure the developement of the N3DS was not that expensive, the only aspect that really looks that way is the new 3D effect and the Amiibo reading screen. Nintendo will try to keep the 3DS alive as long as they can, so they can develope the Fusion idea as well as they can (at least that's what I would like).