HDMI Forum today released the final version of the HDMI 2.1 specification following a preview earlier this year. It includes support for 10K displays, dynamic HDR content, high frame rate 4K video at 120 frames per second and 8K video at 60 frames per second, plus much more.
HDMI 2.1 details: dynamic HDR, 4K120/8K60 frame rates, ALLM, 10K monitors & more