OK, we know that Nintendo is having a conference on October 2nd, and there's undeniable proof. It also seems like Nintendo will announce hardcore games for 2009 because:
A) Bad responce from hardcore from E3
B) Nintendo has a tendency to want to please everyone, including the hardcore
So, I think that if hardcore games are released for next spring/summer, then I have a theory on their selling strategy. A trend is starting that hardcore games are released in the 1st half of the year (SSBB, Mario Kart Wii), and casual titles in the Christmas season (Animal Crossing, Wii Music). This will reveal the appeal to hardcore gamers during slower times of the year, so the smaller audience (hardcore) gets attention, so ther is no supply issues. Then when Christmas, and thus, a ton of Wiis, are in stock, the larger audience (casual) get attention, and Wii's aren't left on shelves.
Again, this only applies if the titles at the conference are hardcore, like F-Zero, or Zelda.
Please point out mistakes, so I can fix them.