IMO, this is not going to happen, at least not for many years to come, if at all. The mouse is used for everything--it's simple to use, inexpensive, very versatile, and in my opinion can do things that other input devices cannot. There may be other technologies for input devices for such things as gaming consoles, cell phones, etc... however as far as the desktop/laptop is concerned, I'm not sure there is going to be much change.
What do you think? You think the mouse is on its way out?