If you think Apple is getting a little predictable with its yearly device refreshes, you probably haven't been charting the progress of its iPod nano. While most products in the Apple line receive an update every 12 months or so, few have experienced the kind of annual reinvention of the nano. It's a rare example of the company drastically re-thinking a product with such regularity -- or of simply not really knowing what to make of it. Depending on how you look at it, this new seventh-generation iPod nano is either the latest, most optimal design of the long-running series, or it's Apple's latest shot in the dark. Even the cynics will have to agree this is a pretty good shot, thinner than ever an
