Apple has just released an updated version of iTunes ahead of the release of iOS 7. This new version of iTunes chimes in at version 11.1 and it comes with support for iTunes Radio, Genius Shuffle and much more. You can take a look at the official changelog for iTunes 11.1 below.
iTunes Radio. iTunes Radio is a great new way to discover music. Choose from over 250 stations or start a new one from your favorite artist or song. Enjoy iTunes Radio ad-free once you subscribe to iTunes Match.
Genius Shuffle. Introducing a magical new way to experience your music library. Choose Genius Shuffle and iTunes instantly plays songs that go great together. Click it again to hear something new—enjoying your music has never been this easy.
Podcast Stations. You can now create custom stations of your favorite podcasts that update automatically with new episodes. Your stations, subscriptions, and current play position sync over iCloud to the Podcasts app.
Sync with iOS 7. You can now use iTunes to sync your favorite music, movies, and more to devices with iOS 7. In addition, iTunes now makes it even easier to quickly organize and sync apps to your iPhone, iPad, and iPod touch.
Note: If you are using OS X Mavericks, your book library can now be found in iBooks for Mac.
You can download iTunes 11.1 from the official iTunes download page or of course through the Software Update tool found within the Mac App Store.