Though iOS 7 is the big story of the day, iTunes Radio is out now in the latest iTunes update. It’s a Pandora-like feature that allows users to create custom radio stations based on their personal musical libraries. It’s supported by ads at the moment, so users will have to part with $25 to upgrade to iTunes Match, which keeps the advertisements out of the headphones. It may be the sleeper hit of the day; this service is important to keep an eye on.