https://www.techradar.com/news/dolby-atmos-is-fianlly-coming-to-apple-tv-4k

Apple is fulfilling its promise of bringing immersive audio to the Apple TV 4K. 

The Cupertino-based company announced at its WWDC 2018 keynote that it's bringing the immersive Dolby Atmos audio format to its streaming device - making it the only streaming device to support Atmos and Dolby Vision.