Apple has released the eighth beta of tvOS 13 to the developers

Overview
The tvOS 13 SDK provides support for developing tvOS apps for Apple TV devices running tvOS 13. The SDK comes bundled with Xcode 11 beta available from Beta Software Downloads. For information on the compatibility requirements for Xcode 11, see Xcode 11 Beta 7 Release Notes.

AuthenticationServices
Known Issues
Passing both ASAuthorizationAppleIDProvider and ASAuthorizationPasswordProvider to ASAuthorizationController is not currently supported on tvOS. (50897359)

Release notes
Apple developer website