Ingenieria Inversa have today released an unscrambler tool for the Wii/gamecube, on their site they have posted a ton of info about disk layouts etc but to most of you and me it means bugger all and thats not to mention that theres no way at the mo to read Wii Discs in the raw format needed for the unscrambler.
Another tool that will hopefully lead to an homebrew exploit, (lets hope so)