This came out a few weeks ago, but I had some fun playing with it over the weekend.

From the Apple support article:

Apple Music Replay uses your Apple Music listening history to calculate your top songs, albums, and artists throughout the year. Apple Music Replay also uses a variety of other factors to determine the music that you’ve played this year such as:

• Music played on any device that’s signed in to Apple Music with your Apple ID
• Not including music played on devices that have “Use Listening History” turned off in Settings
• Counting only music that’s available in the Apple Music catalog
• Songs played in your library must be synced with your Apple Music subscription
• A minimum amount of plays and time spent listening to a song, artist, or album

Interesting that this is only available on the beta Apple Music web app. You can save the playlist and share it, just like any other playlist.