Apple released iTunes 11.1 a couple of weeks ago with support for iOS 7.0 and iTunes Radio. Now they have followed it up with a minor iTunes 11.1.1 release for Windows and Mac which brings a few bug fixes and performance improvements. No major new features seem to have been offered with the update.You can download iTunes for Mac OS directly on your device by opening Software Update by clicking the Apple icon. If you own a Windows PC, you can run Apple Software Update from your Start Screen (menu) or by using the following link
Even though the update doesn't bring any major features, it is always recommended that you download the latest iTunes software if you own an iOS device or use iTunes as your primary media player.