At an investor meeting last year, Iwata said this:
"In this perspective, while we are only going to be able to start this with the next system, it will become important for us to accurately take advantage of what we have done with the Wii U architecture. It of course does not mean that we are going to use exactly the same architecture as Wii U, but we are going to create a system that can absorb the Wii U architecture adequately. When this happens, home consoles and handheld devices will no longer be completely different, and they will become like brothers in a family of systems."
What exactly does he mean by "absorb" Wii U architecture and how does one do that without using the same architecture as Wii U?
When the herd loses its way, the shepard must kill the bull that leads them astray.