MacRumors published a story that Apple has released the second beta of macOS Monterey 12.3 to registered developers.
Apple Seeds Second macOS Monterey 12.3 Beta to Developers
Apple today seeded the second beta of an upcoming macOS macOS Monterey 12.3 update to developers for testing purposes, with the new software coming two weeks after the release of the first macOS Monterey 12.3 beta.
Apple Seeds Second macOS Monterey 12.3 Beta to Developers
Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be available through the Software Update mechanism in System Preferences.