MacRumors published a story that Apple has released watchOS 8.6 Release Candidate to registered developers.
Apple Seeds watchOS 8.6 Release Candidate to Developers
Apple today seeded the release candidate version of an upcoming watchOS 8.6 update to developers for testing purposes, with the new software coming a week after the release of the fourth beta.
Apple Seeds watchOS 8.6 Release Candidate to Developers
To install watchOS 8.6, developers will need to download the configuration profile from the Apple Developer Center. Once installed, watchOS 8.6 can be downloaded through the dedicated Apple Watch app on the iPhone by going to General > Software update.
