One person noticed a cool little detail, probably left-over from a previous stage in development. If the Wii is running in 480p with Zelda: Twilight Princess in and running, pressing the Home button will bring up the menu as usual. If the system is left idle long enough, the screen dimmer will go on and you may notice this:

It’s faint, but it clearly says “Add Mic.” What do you think? Left over from development? Or possibly for use in future games?

WiiNation