Apple today seeded the first beta of an upcoming watchOS 6.1.2 update to developers, one week after releasing the watchOS 6.1.1 update with bug fixes.
Once the proper configuration profile has been installed from the Apple Developer Center, the new watchOS beta can be downloaded through the dedicated Apple Watch app on the iPhone by going to General > Software Update.
To install the update, the Apple Watch needs to have at least 50 percent battery, it must be placed on the charger, and it has to be in range of the iPhone.
There’s no word yet on what features are included in the watchOS 6.1.2 beta, but if we find anything new after downloading the software, we’ll update this article.
https://www.macrumors.com/2019/12/17/watchos-6-1-2-beta/