The latest developers beta for Apple's WatchOS 4.3 brings back Apple Music integration, improved fitness information in the Siri watch face, and a new portrait charging mode. Apple's WatchOS holds a 57 percent share of the smartwatch market.
https://www.notebookcheck.net/Apple-WatchOS-4-3-Developer-Beta-brings-some-new-usability-features.280328.0.html