Apple TV eARC support removed
I’m now on v17.4 for Apple TV, and it appears after latest update that eARC support has been removed from the Audio Output menu. Anyone else experiencing this
Apple TV 4K
Apple TV eARC support is for Apple TV 4K (2nd generation or later) in combination with HomePod speakers, and the documentation says that it should still be supported. Nothing changed for this with tvOS 17.4. tvOS 17.4 has been out for 47 days, without similar reports.
Use HDMI ARC or eARC with your Apple TV 4K - Apple Support
Your issue does not appear to be about the software version.