HDMI 2.1 announced, with support for eARC,8k resolution, dynamic HDR, and Variable Refresh Rate

Categories: Innovation
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We’re still a ways off from the days when 4K becomes the definite display resolution standard, but if you’re already pining for the days when 10K becomes the norm, you’ll be happy to know there’s already a cable waiting for you.

Today the HDMI Forum announced HDMI 2.1, a new specification that offers support for both 10K resolution and Dynamic HDR, as well as faster refresh rates of 60Hz and 120Hz for 4K. This is big, as the focus was merely on 8K resolution.

The specification for HDMI 2.1 also includes features that will make gamers happy, such as Variable Refresh Rate (VRR) that irons out display lag and Quick Frame Transport (QFT), which reduces latency.
It also supports Auto Low Latency Mode (ALLM), which automatically drops to the best latency for ideal viewing, and Quick Media Switching (QMS), which drastically reduces the time you’ll see a blank screen while switching between media.

Good stuff all, and fortunately HDMI 2.1 is also backwards compatible with current HDMI-compatible units. This means that everyone benefits, whether it’s our future selves watching The Avengers VI in 10k or our older units that want to partake in the current stuff.


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