"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Apple Releases iTunes 11.1 with iTunes Radio, Genius Shuffle and More
This version of iTunes comes with several major new features, including:
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.
iTunes 11.1 is currently available through the iTunes download page and should be arriving in the Software Update tool within the Mac App Store shortly.