The ONLY place I've seen it mentioned before today (and I HAVEN'T actually been looking a lot either) described the (admittedly unconfirmed) architecture and it sounded a lot like the Wii's IOS's. It said something about the operating system running on a separate processor and old versions of it being stored for compatibility.Ok, i should have said speculations from some game news sites and game forums on the web..no one has actually seen the Wii U OS, non of that info is released to the public yet.Not sure what information you're referring to, the WiiU is not much different from the Wii at all (same CPU family) and still uses IOS.Hehe, yeah...if the Wii U information is right, the Wii architecture is completely different and Wii mode is not done with IOS.
Again, though, they did say it was unconfirmed information.
Shoot, if we can get Wii homebrew working on Wii U right out the box I think my head would asplode.