Ultra high speed HDMI 2.1 spec released, with a new cable to boot

The HDMI Forum's Technical Working Group has released the specs for HDMI 2.1, as well as a new Ultra High Speed HDMI cable. Some of the 2.1 spec's features will be backward compatible with your existing HDMI 2.0 cable, others will require you to upgrade.

HDMI 2.1: What you need to know - CNET

Unitek C11031DGY 8K Hdmi2.1 Active Optical Cable30M(98ft)

AV Access 8K HDMI Fiber Optic Cable, 15m/50ft HDMI 2.1 ARC Cable

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33ft Certified HDMI 2.1 Cable, AUBEAMTO 48Gbps Ultra High Speed HDMI Cable 8K HDMI to HDMI

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The Ultra High Speed HDMI Cable enables both audio and video transfer via one cord for extreme convenience. Supporting up to 8K at 60Hz display with a range of HDR supported formats, this HDMI cable includes all of the HDMI 8K features in a simple, sleek design. 100% pure oxygen-free bare copper wiring technology gives this HDMI cable added strength and durability, enabling 48Gbps speed - a necessity for UltraHD and HDR.

Certified Ultra High Speed HDMI Cable (2.1 8K HDR eARC) Dolby Vision & Dolby Atmos (6ft)

Nixeus Ultra High Speed HDMI Certified Cable – Certified by HDMI to Support HDMI 2.1 Features, 48Gbps, Dynamic HDR, 4K 120Hz/144Hz, 5K 120Hz/144Hz, 8K 120Hz, and 10K 120Hz — nixeus

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PureFiber® ULTRAVISION®, HDMI 2.1 48Gbps, 4K120Hz, 8K60Hz