Not to be outdone by a refreshed iPod touch (and, let's face it, a new iPhone), Apple also shot out a 5.4mm-thick iPod nano today -- that's 38 percent thinner than the one it replaces. We just got our hands on the newest, tiniest music player outside of Apple's product launch today, replete with a 2.5-inch multitouch panel and a familiar Home button. As you'd expect, the enlarged display is hugely beneficial. While there's no bona fide version of iOS on here, the stripped-down variant seems sufficient for handling media a