New HDMI 2.1 specification brings support for 4K at 120Hz, 8K, 10K resolutions | AppleInsider
HDMI 2.1: What you need to know - CNET
UGREEN 8K HDMI 2.1 Certified Cable, Ultra High Speed 4K 120Hz 48Gbps 6.6ft HDMI Cord with Nylon Braided, Support Dynamic HDR eARC Dolby Atmos, Compatible for PS5 Xbox Series X Nintendo Switch
HDMI 2.1 is no small iterative change over 2.0 - NotebookCheck.net News