At WWDC, Apple announced that Amazon would release its Prime Video app for the Apple TV later this year. Amazon pulled the device from its shelves nearly two years ago.
Apple announced that the Prime Video app would offer 4K content on September 12th saying, "Apple TV 4K will also offer 4K HDR content from popular video services, including Netflix and Amazon Prime Video, coming soon."
Please follow iClarified on Twitter, Facebook, Google+, or RSS to be notified when the Prime Video app launches. You can purchase the 64GB Apple TV 4K from Amazon for $199.