Kotaku
The fun-loving pranksters at IGN's Wii channel have manged to wrangle some cool new functionality and features from developer documentation, answering some long standing questions about the Wii-mote and opening new cans of technology worms in turn. Worm one:
The Wii-mote features 6KB of "non-volatile" memory, whose exact purpose remains a mystery. It's possible that this memory could enable players to store custom settings for the controller. Official documentation does not specify one way or the other.
It is a mystery! I doubt we'll see much in the way of cool added functionality based on this, but you never know with Nintendo. They sly! Next worm:
The Wii-mote is able to act as something of an eye, measuring coordinates between 0-1023 on the X axis and 0-767 on the Y axis, which means that it is more or less seeing a megapixel image. Whether or not this data can be interrupted into visual information remains unknown.
There's plenty more tech speculation at the full article including insights on the LED messaging system, battery life, interference with light sources and much more.
