this story on Engadget, the Samsung E6 e-reader may be coming to Barnes and Noble. Given that it has a touch screen and a stylus pen for "inking," this could be the start of a new revolution of digital notepads that may gain tremendous popularity among those of us who wish to avoid paper at all costs.
The Nook is another e-reader that is built for Barnes and Noble, but the Nook has a small color touch screen section on the bottom (so you can't really take notes on the Nook), but it's another great option for people who don't want to write, but want to read.
Eventually, I think the majority of these e-readers (digital book readers) will come with color touch screens. The Apple iPad will be the first, but others will soon follow.