You can also download the update 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.
Now we are on the third release of iTunes 11 which brings improvements to the MiniPlayer, an enhanced Songs View and support multi-disc albums. Even though this cannot be considered a major release, updates to the performance are always welcome.