While the new iPod touch stole the show during Apple's recent marketing event, the company also introduced its latest overhaul of the entry-level iPod shuffle. In theory, it's the best of two worlds: it combines the simple button controls of the second-generation iPod with the VoiceOver that made playlists and podcasts possible on the third. In our full review, we'll determine if Apple has addressed the issues that frustrated owners of earlier shuffles.