Apple has released iTunes 12.2, which adds support for its new Apple Music service. The update, available for both Mac and Windows, allows users to take advantage of on-demand access to much of Apple's iTunes catalog, listen to the new Beats 1 radio station, and get new content from their favorite artists with Connect, a new social network for music.
The new Apple Music content is available in the Music section of iTunes, as you'd expect. You'll notice tabs for New Music and Connect have been added to the top of the section. Of course, you still have easy access to all of the music you own, as well.
To update iTunes on your Mac, simply open the Mac App Store and head to the Updates tab.