hdmi-20-vs-hdmi-21-whats-the-difference-and-which-do-i-need

HDMI 2.1 is the newest version of the HDMI interface, concerning both HDMI ports and the cables themselves. At the time this article is being written in mid-2019, HDMI 2.1 is in the nascent stage of its lifecycle--we're just now beginning to see AV companies addressing HDMI 2.1 in their current- and next-gen products. Some high-end TVs, for instance, are starting to come with HDMI 2.1-compliant ports, and ultra-high speed, HDMI 2.1-compliant cables are right around the corner. The next generation of video game consoles from Sony and Microsoft will support HDMI 2.1, too. The new HDMI interface will support higher performance standards than the current interface, HDMI 2.0 (or 2.0b, to be more specific).