Apple is quietly rolling out a new custom personalized playlist of 'chill' songs

It's not a mistake - Apple is actually quietly rolling out a new automatically-generated, custom playlist that will update on Sundays.

It's Apple's third Spotify Discover-style playlist, following My Favorites, which is generated out of songs Apple knows you like, and My New Music, which is composed of new songs Apple thinks you'll like.

Here's what you need to know:

• It's only available to a small percentage of Apple Music users for now but it's rolling out to more people in the coming weeks.
• Whether or not you're on the iOS 11 beta shouldn't affect Chill Mix showing up for you.
• It updates every Sunday with a new playlist so you should add songs to your library if you like them.
• Your behavior in the Apple Music app helps Apple place songs on the playlist. Apple's algorithm takes into account things like your library, what you listen to, and which songs you've liked, as well as a little bit of human curation.
• It's not instantly clear what kind of music Apple considers "chill," but the playlist is designed to be something that you might want to throw on while you're relaxing. Many of the songs on my playlist are slower in tempo than what I usually listen to.
• My personal Chill Mix has rap, punk, and indie on it, so it's not restricted to certain genres - instead, it finds appropriate songs in the genres you like.
• You'll find it in the For You tab in the Apple Music app.

Here's what the playlist looks like on my device. It's comprised of 25 songs that add up to 69 minutes: