MacRumors published a story that Apple has released the third beta of watchOS 11 to registered developers.
Apple Seeds Third Beta of watchOS 11 to Developers
Apple today seeded the third beta of an upcoming watchOS 11 update to developers for testing purposes, with the beta coming two weeks after the second beta was released.
To install the watchOS 11 update, developers need to open the Apple Watch app, go to the Software Update section under "General" in Settings, and toggle on the watchOS 11 Developer Beta. An Apple ID linked to a developer account is required.