The original DS is made in a 130nm process like the GBA SP and Nintendo used the GameBoy Micro for don´t losing money in the process of the factory adaptation.
GameBoy Micro was the first at 90nm and the next will be NintendoDS.lite.
Jeez, i thought this thread was about wanting the next-gen Gameboy...
But it's again a fucking brainwashed over-consuming dude's thread about wanting yet another fucking redesign? ---- LOL ------
And even if we talk about next-gen gameboy it's too early. Enjoy your god damned DS, it just came out for Christ's sake!!
My dream GBA (and one that will never occur) is simply the existing SP design with the revised screen, native MP3/DivX/upgradeable codec support, an SD slot, and a fricken' headphone port. The Play-Yan gets it closer to that point, but it's still not nearly as open as I'd like and I can't have a game in it at the same time.