Billboard:

On Wednesday (August 7) Apple Music announced the launch of Apple Digital Masters, a new initiative by the streaming giant that combines all of its “Mastered for iTunes” offerings into one global catalog. This is the company’s first public acknowledgement of the initiative, which it has been quietly unveiling for some time.

You’ll see the new “Apple Digital Master” on associated songs in the Music app in macOS Catalina. I’m hoping for a checkbox that lets me limit my music browsing to only those songs.

Take a look at this Reddit post to get a look at the new badge.