Following yesterday’s release of the fourth developer build, Apple today seeded public beta testers of the fourth-generation Apple TV’s operating system with the third beta of tvOS 11. This comes two weeks after the second beta was released to the same party.
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.