From Apple regarding the new Carplay update:
"Drivers can now listen to Spatial Audio songs and albums available in Apple Music and third-party apps while connected to CarPlay. Vehicles with multichannel audio capabilities can enable an immersive sound experience. Spatial Audio with support for Dolby Atmos can also be implemented in compatible vehicles."
"Drivers can now listen to Spatial Audio songs and albums available in Apple Music and third-party apps while connected to CarPlay. Vehicles with multichannel audio capabilities can enable an immersive sound experience. Spatial Audio with support for Dolby Atmos can also be implemented in compatible vehicles."