1 Updated Music App
The final major announcement in regards to watchOS was with the Music app. In a future watchOS 4 update (coming soon, according to Apple) you can expect the Apple Watch to gain full Apple Music support. Whether you are connected via Wi-Fi or cellular, the updated Music app will allow music to play directly from Apple Music to your Apple Watch without downloading the music to your watch first.
Paired with the new cellular Apple Watch, full Apple Music support means you can stream “over 40 million songs”, whether you brought your iPhone or not, and makes the Apple Watch an even more impressive fitness companion.
The new Music app in watchOS 4 will also automatically sync your most listened to music, as well as your curated playlists from Apple Music. Using Apple Music data, Apple Watch knows what you listen to most and keeps it ready, allowing you to listen even when you’re offline or away from your iPhone.