And find it all in your music library on all your devices. The new Apple Music app is the ultimate music streaming experience on Mac.1 Explore a library of 50 million songs, discover new artists and tracks, find the perfect playlist, download and listen offline, or enjoy all the music you’ve collected over the years. iCloud seamlessly syncs everything across your devices - or you can back up, restore, and sync by connecting the device directly to your Mac. And rest assured everything you had in your iTunes library is still accessible in each app. It all changes again with three all-new, dedicated apps - Apple Music, Apple TV, and Apple Podcasts - each designed from the ground up to be the best way to enjoy entertainment on your Mac. ITunes forever changed the way people experienced music, movies, TV shows, and podcasts. Music, TV, and podcasts take center stage.

The supplemental update focuses on security issues only. You would want to download the combo update if you're going from 10.5.0 to 10.5.3.

The combo update includes all the files necessary to update from the last major version. The macOS regular update only includes the files needed to update from the immediate previous version, for example from 10.5.2 to 10.5.3. What's the difference between the macOS combo and the regular update? Now you can take everything you do above and beyond. And discover smart new features in the apps you use every day. Extend your workspace and expand your creativity with iPad and Apple Pencil. Enjoy your favorite iPad apps now on your Mac.

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