https://wccftech.com/apple-releases-first-beta-of-watchos-6-2-8-and-tvos-13-4-8-to-developers/

Today, Apple has seen fit to release the first beta of watchOS 6.2.8 and tvOS 13.4.8 to developers for testing purposes. If you're a developer, you can download the latest beta builds on your compatible Apple Watch and Apple TV right now from the Apple Developer Center. Scroll down to see more details on the beta builds and what you can expect from the updates.

If you're interested, watchOS 6.2.8 beta 1 is available for free for the Apple Watch. It can be downloaded on the compatible Apple Watch models via the dedicated Apple Watch app on your iPhone. All you have to do is head over to General > Software Update and you're good to go.