iTunes 11Apple has finally released iTunes 11. The new iTunes is almost 5x-10x faster than iTunes 10, sports a redesigned and much cleaner interface that resembles iTunes for iOS and is completely integrated with iCloud.com. All music, movies, books and more purchased from any of your device will show up on iTunes as the software now works seamlessly with iCloud.
iTunes 11 Screenshot
The UI has undergone a radical shift. It is the biggest redesign since the original iTunes. Just go to Software Update on your Mac to update iTunes to version 11. The mini-player is also brand new in appearance.

iTunes 11 page on Apple.com. To learn more about everything that is new in iTunes 11, check this page.