https://wccftech.com/first-public-beta-of-tvos-13-released-to-public-beta-testers/

Today, Apple has seen fit to release the first public beta of tvOS 13. The new beta corresponds to the second tvOS 13 update which was released to developers last week. If you’re interested, you can install the public beta right away on your supported Apple TV. Let’s dive in to see some more details on the latest public beta of tvOS 13 and whether it features any sort of variation.

If you’re interested, you can install the public beta of tvOS 13 on your Apple TV by going to Settings and then navigating to the Software Update section situated under “System”. Toggle “Get Public Beta Updates” on and once you have done this, your Apple TV will download the beta software automatically. If you’re not enrolled in the public beta program, you can do so through Apple’s beta testing website.