Sony's Music Unlimited is still relatively new to iOS. The app, which requires a subscription to the like-named service, just launched on the iPhone last year, giving similar streaming offerings like Spotify and Rdio at least a two year head start on the platform.
But it's doing its best to catch up to the rest of the pack. Sony announced today that it has submitted a significant update to the App Store for its iOS app that includes a number of new features including offline listening, 320kbps streaming audio, and more...