Looks like Nintendo's taking the whole "Blue Ocean" strategy a bit literally, eh?
Sorry, I had to get that out.
The graphics are another example, alongside Mario, Metroid, and a few others, that the lack of graphical quality in Wii games is not nearly as much about the console's hardware capabilities as it is the developers' lack of effort. Hopefully these will raise the bar for the future.
In any other year I would seriously look at this, but I have way too many other things I need to buy (anyone who says Nintendo doesn't care about traditional, hardcore games doesn't know what they're talking about; I dare you to find one year in the past decade where Nintendo has had a better traditional lineup than Metroid Prime 3, Battalion Wars II, Fire Emblem, Super Mario Galaxy, and Super Smash Bros. Brawl). This is definitely something to look for in the occasional lulls in the release schedule that pop up.