MacRumors published a story that Apple has released the seventh beta of watchOS 8 to registered developers.
Apple Seeds Seventh Beta of watchOS 8 to Developers
Apple today seeded the seventh beta of the upcoming watchOS 8 update to developers for testing purposes, with the update coming one week after Apple released the sixth watchOS 8 beta.
Apple Seeds Seventh Beta of watchOS 8 to Developers
To install watchOS 8, developers will need to download the configuration profile from the Apple Developer Center. Once installed, watchOS 8 can be downloaded through the dedicated Apple Watch app on the iPhone by going to General > Software update.