Ok, I agree, Nintendo is going to use holographic memory just to store their ideas... >_>
But I shall point out that the DSi was speculated too.

Anyways, the day it's released is gonna be a happy day for hackers.
SD card equals homebrew. We just hope it will support SDHC, since
it's pretty much the standard nowadays... and practically we wouldn't
need hard drives or anything for the Wii if they could just release a
software update to allow the Wii to read SDHC cards (they go up to 32GB).