https://wccftech.com/amazon-prime-video-app-for-apple-tv-4-and-apple-tv-3-now-rolling-out/

Announced back at WWDC 2017, Amazon’s Prime Video app for Apple TV 4 is now rolling out. Surprisingly, the app is available for the now-discontinued Apple TV 3 as well.

Apple’s WWDC 2017 was a packed event. Not only we were treated to brand new iPad Pros and the Apple TV 4K, a revelation was made on stage that the Amazon Prime Video app will make its way to the Apple TV as well. Today, the day has finally come as the aforementioned software is available for all Apple TV 4 users as well as those with an Apple TV 3. Yes, the latter is a discontinued model from Cupertino, yet you will be able to get a taste of it if you have a piece lying around.