Along with iOS 12 beta 4, Apple has also seed beta 4 of watchOS 5 to registered developers and beta testers.
Registered developer can install the latest beta by going to Apple’s Developer Center page and installing the necessary configuration profile. Once the configuration is set, a developer can download the newest beta from the Apple Watch iOS app on iPhone.
Remember that the Apple Watch must be connected to the charger and have at least 50% of the battery life before you could install watchOS 5 beta 4 on your Apple Watch.
We have not found any significant changes and updates in this new beta, If found, we will update in next post.
For now, check:
How to Switch Between Recently Used Apps on Apple Watch
How to Set, Change or Remove Passcode on Apple Watch
How To Enable & Use Night Stand Mode on Apple Watch
How to adjust Haptic Feedback level on Apple Watch