According to reports, a Nintendo executive accidentally let slip that the Wii graphics processor (GPU) is actually capable of doing full HD. Although Nintendo aren't interested in pursuing HD at the moment, if this is true perhaps the Wii will see hi-def games in a few years when HD has a stronger user base.
An Irish website (I'm dubious already ^_^) is claiming that Mortal Kombat: Armageddon will be the first 3rd party game to make full use of the Wii's online capabilities. Here's hoping.
An unconfirmed rumor exists that Nintendo are now working on a wireless nunchuk. This stems from some complaints that the wire restricts movement in games like Boxing (a part of Wii Sports).
Rumors from an official source in Japan suggest that a sequel to Wii Sports could be on the way. Said to include varied sports like tennis, hockey, volleyball, swimming and horse riding it's supposedly full of new and revised gameplay features. Most interestingly, the rumor also claims it will have online play so you can face off against other sports fans.
A rumor has started that Nintendo are looking into ways of making wiimotes suitable for leg use. This would likely work by some kind of strapping mechanism. Image the possibilities. Football! Dancing! Err... long jump?
A rumor is out that the Wii is graphically a lot more powerful than we've been led to believe. It's been said that Nintendo have been playing us for fools the whole time, showing us demos with substantially crippled graphics compared to the Wii's true capabilities. Why would they do this? To create a sense of wonder and surprise at the next press event which takes place on September 14th in New York. Watch this space!
Word is out that the wiimote can't aim properly at certain angles when halogen lighting is used in the room. As halogen lights get more common in our homes it could put a dent in the Wii's popularity. If this rumor is true hopefully Nintendo can solve it before launch. The alternative of course is to play without the lights on. Night tennis anyone?