https://wccftech.com/apple-releases-beta-10-of-watchos-5-and-tvos-12-released-to-developers/

Apple has seen fit to release beta 10 of its upcoming tvOS 12 and watchOS 5 to developers for testing purposes. tvOS 12 and watchOS 5 are on the verge of being announced and these are some of the last beta builds that Apple has released. The new beta builds arrive almost a week after the company released beta 9 to developers. In addition to this, it has been more than two months since Apple announced the updates at its WWDC event this year. So let’s see some more details on what the new beta builds have to offer.

watchOS 5 beta 10 is designed for the Apple Watch and you can download it right now through the Apple Developer Center. Do make sure that a proper configuration profile is installed. Once the profile is installed, watchOS 5 beta 10 can be downloaded through the dedicated Apple Watch app on your iPhone. Simply head to General and then Software Update.