Today, Apple seeded those registered with their public beta program the fourth beta of tvOS 11. This comes a day after the fifth developer build was released and two weeks after the third public beta was rolled out.
If your set-top-box is registered for preview builds of the OS, head over to Settings > System > Software Updates > Update Software and hit the download button.
tvOS 11 includes minor improvements but will bring the Amazon Prime Video app to the Apple TV alongside scheduled dark and light modes for viewing times. We’ll update this article if any major changes were made in the latest build.