MacRumors published a story that Apple has released the third beta of macOS 13 Ventura to registered developers.
Apple Seeds Third Beta of macOS 13 Ventura to Developers
Apple today seeded the third beta of macOS 13 Ventura, the next-generation version of the Mac operating system that's set to launch this fall. The third beta comes two weeks after Apple provided the second beta to developers.
Apple Seeds Third Beta of macOS 13 Ventura to Developers
Registered developers can download the beta through the Apple Developer Center and once the appropriate profile is installed, betas will be available through the Software Update mechanism in System Preferences.