Apparently MKW will support up to 16 players in a game (does that translate to 16 different characters?) and will be the first in the series to offer Battle Mode online. Oh, and you can now perform stunts in the air. We're not yet sure if we should be troubled by the fact that in addition to some Wii-exclusive maps, "classic DS tracks will be recreated with Wii graphics." We're going to hold off on getting worried until we see how many new tracks are being included. But let's hope for at least half-and-half, eh?
Update: According to CVG, Official Nintendo Magazine has released a statement saying, "The details printed in Official Nintendo Magazine 21 regarding Mario Kart Wii were healthy speculation on our part and are in no way an official announcement from Nintendo. We are sorry if we have mislead anyone. We do not set out to mislead our readers. ONM apologizes profusely for any misunderstandings that this has caused."
So, did ONM spill a few beans too early, or were they just making stuff up?