Apple has released version 11.3 of its iTunes multimedia suite for Windows and Mac. The new version brings several notable features and improvements including the usual bug fixes and performance improvements.
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
The official changelog of iTunes 11.3 is as follows:
iTunes 11.3 includes all-new iTunes Extras for HD movies. iTunes Extras can include behind-the-scenes videos, short films, high-resolution image galleries, director’s commentary, scenes, and more. These immersive iTunes Extras can also be enjoyed on Apple TV with Software Update 6.2 now, and will be available on iOS 8 this fall.
New iTunes Extras will be automatically added to your previously purchased HD movies as they become available - at no additional charge.