https://wccftech.com/download-macos-12-3-watchos-8-5-tvos-15-4-final-released/

Final versions of macOS 12.3 Monterey, watchOS 8.5 and tvOS 15.4 are now available for download for everyone with a compatible device.

Alongside iOS 15.4 and iPadOS 15.4, Apple has also released macOS 12.3 Monterey for the Mac, watchOS 8.5 for Apple Watch and tvOS 15.4 for Apple TV. All of these updates are immediately available to download for those with a compatible device.