https://wccftech.com/apple-seeds-first-beta-of-macos-catalina-10-15-1-to-developers/

Apple has seen fit to release the first beta of its upcoming macOS Catalina 10.15.1 update to developers for testing purposes. The new beta build arrives a day after the company released macOS Catalina to the public. The update brought a bevy of new forward-facing additions to the table. if you're unfamiliar check out our top seven features of macOS Catalina. As for what the new beta build brings, let's dive in to see some more details on the release.

if you're a developer, you can install Apple's first beta of macOS Catalina 10.15.1 on your compatible Macs right now. It can be downloaded via the Software Update mechanism in System Preferences. Do take note that a proper configuration profile is required which can be installed through the Apple Developer Center.