Apple has been quietly rolling out iTunes Match audio fingerprint to all Apple Music subscribers. Previously Apple was using a less accurate metadata version of iTunes Match on Apple Music, which wouldn’t always match the correct version of a particular song. We’ve all seen the stories of a live version of a song being replaced by a studio version, etc.
Using iTunes Match with audio fingerprint, those problems should be a thing of the past.
It makes no sense that they launched Apple Music with the vastly inferior metadata matching system. I’m glad it’s finally being fixed, but this shouldn’t have been a problem to begin with.