The good folks over at Nintendo Life had the opportunity to get the development team of Opera for the Nintendo Wii console to spill a few details about the upcoming browser software.

Will Opera for Wii support tabbed browsing and bookmarks? And will we be able to have personalised bookmarks, so that each family member can have their own profile?
Yes, Opera for Wii will include bookmarks. But Nintendo and Opera have not yet revealed specifics on the unique browser features on the Wii. More will be announced as the Wii launch approaches.

Will the browser be sold as a separate item, like it is for the DS? If so, is it possible to “install” the browser rather than having to swap in the optical disc?
The Opera browser is saved to the Flash ROM on the Wii console, and does not require a separate memory card as Opera for DS does. The browser can be launched in only a few seconds, immediately delivering a great user experience.

What version of Opera is the browser based on? 8.5 or 9.0 ?
Opera 9

Lots more great information at the full article.

So, what do you suppose is the chance that the homepage will be set to Nintendo.com? =D