Rhapsody has issued a notice to its customers advising them to update to Rhapsody version 2.2.13 before updating to iOS 6. The upcoming Rhapsody release will include a new feature that automatically restores any downloaded songs automatically after updating to a new version of iOS. If a user updates their device before the new Rhapsody app is released they will still be able to restore all of their downloaded content, but will have to do so manually. The updated Rhapsody app has already been submitted to Apple for approval and is expected to be released very soon.
