Apple has rolled out a tvOS update that brings support for HDMI ARC and eARC to your Apple TV 4K, meaning you can now use a HomePod (or HomePod mini) as a TV speaker when watching any input ...
During my testing, I connected the Arc to an LG OLED TV and used an Apple TV 4K connected to the TV for streaming. To get Dolby Atmos, you'll need to use the HDMI port, not optical. Your display ...