I have not heard of an update being included in GH:WT. I'm sure by now we would know if that was the case, but if for any reason there is I'm sure there will be a fix within a day or two. So far updates have only been included in Nintendo's 1st party titles, so I wouldn't worry.
ynomrahnsguht> I would suggest downloading and using Starfall for your Wii. You can install a feature that tells your Wii to skip the update on a disc. That way, even if there is an update, your Wii will ignore it and just boot the game. I use this personally. http://wiibrew.org/wiki/Starfall
zer0> Your question is not only against forum rules, you are asking for illegal content. Please review forum rules before posting again. Thanks.
Founding father of the Wiibrew Packgen.
About 2 noob posts away from going ape sh*t