HDMI 2.1 specification had been announced by HDMI Forum, Inc on the 28th November 2017. The new specification allows for higher bandwidth to support 8K 60fps and 4K 120fps, and up to 10K resolution. Dynamic HDR format is also supported to display better detail and colour.

8K resolution will now be the norm. Image: HDMI Forum

HDMI 2.1 supports up to 48 Gbps bandwidth with a Ultra High Speed HDMI Cable. This cable is backward compatible for use with existing devices.

The addition of variable refresh rate support for smooth motion will be good news for gamers. Quick Frame Transport promises lower latency to ensure smoother game.

The HDMI 2.1 also comes with Enhanced ARC (eARC) for higher resolution audio format and use with home theatre systems. In addition, Quick Media Switching (QMS) eliminated delay that results in black screen before video content is displayed. An Auto Low Latency mode (ALLM) will allow latency setting to be set automatically.

The HDMI 2.1 specifications will be published in stages next year, and consumers can expect them be rolled out only in the future.

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