MacRumors published a story that Apple has released the second beta of watchOS 9.4 to registered developers.
Apple Seeds Second Beta of watchOS 9.4 to Developers
Apple today seeded the second beta of an upcoming watchOS 9.4 update to developers for testing purposes, with the software update coming two weeks after launch of the first beta.
Apple Seeds Second Beta of watchOS 9.4 to Developers
To install the watchOS 9.4 update, developers will need to download the configuration profile from the Apple Developer Center.