Looks like the cat's out of the bag. The Wall Street Journal's had a glimpse at what it says is an upcoming ad for Barnes & Noble's impending announcement, which just so happens to be a color, touchscreen e-book reader dubbed the Nook. According to the article, it'll be out Tuesday, retail for $259, and will let users "lend e-books to friends." Very interesting, killer price, but still no glimpse of the product itself -- all we have at this point is last week's rumor. So who's
