Apple today pushed the watchOS 8.1 developer preview Beta4 update (build number: 19R5566a) to Apple Watch users. This update is one week after the last release.
Users can download the watchOS 8 Beta description file through the relevant App-Discover-Apple profile, and download and update watchOS 8.1 Beta3 through the Apple Watch app on the iPhone.
The watchOS 8 system brings a redesigned breathing app, as well as new portrait dials, information apps, and photo apps.
The watchOS 8 runs on all Apple Watch models that support watchOS 7.
At present, the specific update content of watchOS 8.1 Developer Preview Beta4 is unclear.
Users who install the update must make sure that the Apple Watch is charging and within the communication range of the iPhone connected to the wireless LAN.
James Chow 
Sean Lee 
Iman iman