Following the release of the ninth beta of iOS 11 and the announcement of their next event, Apple today began seeding developers with the ninth build of tvOS 11 for testing on the Apple TV. This comes three days after beta 8 was rolled out 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.