https://wccftech.com/download-macos-catalina-beta-3-watchos-6-beta-3-tvos-13-beta-3-released/

Apple’s floodgates are open and beta 3 of macOS Catalina, watchOS 6 and tvOS 13 is now available for download.

It’s always a pleasant sight whenever a new beta comes out that is packed with new bug fixes, performance related enhancements and even a few cosmetic changes. So, if you have been waiting for beta 3 of macOS Catalina, watchOS 6 or tvOS 13 to arrive, then the wait is over.