MacRumors published a story that Apple has released the second beta of tvOS 13.4.5 Update to registered developers.
Apple Seeds Second Beta of tvOS 13.4.5 Update to Developers
Apple today seeded the second beta of an upcoming tvOS 13.4.5 update to developers, two weeks after seeding the first beta and a month after releasing tvOS 13.4.
Apple Seeds Second Beta of tvOS 13.4.5 Update to Developers