The Specs for the updated Apple TV 4K are available, and it does not support TrueHD audio
Let’s clarify these topics:
Dolby Atmos is a technology that exists in two different audio codecs:
- TrueHD
- E-AC3
The Apple TV 4K (1st and 2nd gen) supports E-AC3, but does not support TrueHD.
Any Atmos content you have that is E-AC3 will play on the Apple TV 4K.
Atmos contained in TrueHD can not play back on the AppleTV. The Atmos metadata will be lost when transcoding TrueHD to E-AC3.
Your only device options for audio passthrough support of TrueHD is a Nvidia Shield, PC, or Xbox (currently in preview)
That said, there is almost no disc based content out there that contains E-AC3 Atmos; it is all TrueHD.
As for Dolby Vision
There are currently 6 known profiles (versions) for Dolby Vision HDR.
The Apple TV 4K only supports Profile 5.
The Dolby Vision found on 4K Discs is Profile 7.
You can play any Dolby Vision content on the Apple TV 4K (using Plex or Infuse) that is Profile 5.
Your only option to play back 4K rips with Dolby Vision (Profile 7) is the Nvidia Shield.
