Amazon has just announced that current generation Fire TVs and Fire TV Sticks will receive Fire OS 5 based on Android Lollipop. Amazon first announced Fire OS 5 for Fire tablets in June with a vauge reference to Fire TVs. It was unclear at the time if current generation Fire Tv devices would also be receiving an update to Fire OS 5, or if it would be received for next generation Fire TV devices. Today we have confirmation, as well as a developer preview, of Fire OS 5 for the Fire TV and Fire TV Stick.
Fire OS 5 for Fire TV devices is based on Android 5.1 Lollipop and will include full support for apps using Android TV libraries. This means developers making apps for Android TV will be able to easily port their apps over to the Fire TV and Fire TV Stick. Anyone with an Amazon Developer account can sign up to receive the Fire OS 5 update on their Fire TV device.