MacRumors published a story that Apple has released the fourth beta of watchOS 8.5 to registered developers.
Apple Seeds Fourth Beta of watchOS 8.5 to Developers
Apple today seeded the fourth beta of an upcoming watchOS 8.5 update to developers for testing purposes, with the software coming a week after the release of the third watchOS 8.5 beta.
Apple Seeds Fourth Beta of watchOS 8.5 to Developers
To install watchOS 8.5, developers will need to download the configuration profile from the Apple Developer Center. Once installed, watchOS 8.5 can be downloaded through the dedicated Apple Watch app on the iPhone by going to General > Software update.