The widget lets you see what’s currently playing, pause or skip to the next track and, if you’re listening to iTunes radio, buy the track with a click. To install the new widget, click on the Notification Center icon (top right corner of the screen in OS X) and click Edit at the bottom.
The new version also brings improved performance during syncing with an iPhone, iPad, or iPod touch.
To get the 212MB-heavy iTunes update, check the Updates tab in your Mac App Store.
The new version of iTunes comes days after Apple upgraded both iOS and OS X, improving stability and performance in the former and addressing several security issues in the latter.