Tablet revolution reality check
With so much chatter about tablets this year, you might think that the handheld, rectangular devices being unveiled represent a significant innovation. The reality is that so much of what we're seeing is not a whole lot different than what we saw in previous years; these products offer only a few new twists. But those new twists could make the difference between tablets' remaining a niche item and their finally busting out to the mass market in a meaningful way.