HDMI 2.1 is the latest version of the HDMI specification and offers a number of important features that are designed to improve the video and audio experience for users. Perhaps the most noteworthy feature of HDMI 2.1 is support for resolutions up to 10K, which is ideal for ultra-high-definition displays. In addition, HDMI 2.1 also supports a wider color gamut, higher frame rates, HDR10+, dynamic metadata, and object-based audio. All of these features work together to provide an immersive and realistic viewing experience that is unlike anything that has come before it.