A decent article about HDMI 2.1
https://www.cnet.com/news/hdmi-2-1-what-you-need-to-know/
https://www.hdmi.org/manufacturer/hdmi_2_1/index.aspx
ARC will be replaced with eARC, or enhanced Audio Return Channel, this will offer more available bandwidth for audio
https://www.cnet.com/news/hdmi-2-1-what-you-need-to-know/
https://www.hdmi.org/manufacturer/hdmi_2_1/index.aspx
ARC will be replaced with eARC, or enhanced Audio Return Channel, this will offer more available bandwidth for audio