A surprise element of Apple's iPod announcements on Tuesday was the introduction of a completely revised iPod shuffle. No larger than the Apple Radio Remote, the new model is the world's smallest MP3 player, according to Apple. Its aluminum shell features a built-in belt clip and is small enough to require its own dock in place of the earlier model's built-in USB connector. The dock uses an innovative technique that uses the headphone jack for both audio and data. Also notable is the same 12-hour battery life in spite of the dramatically reduced player size. Apple has consolidated the iPod shuffle line into a single 1GB model, which is shipping in early October for $79 from the Apple Store. Click through for a larger photo of the shuffle in its dock.