At the IFA trade show in September, the HDMI Forum announced version 2.0 of the specification. Channel bandwidth gets a huge boost, from 3.4Gb/s to 6Gb/s, which will now allow 60Hz refresh rates at 4K resolutions, something that only DisplayPort 1.2 could achieve. We’ll also be getting up to 32 audio channels-beyond overkill at home, but quite handy for movie theaters. To that end, HDMI 2.0 will also natively support a 21:9 display ratio. There is also a “dual video stream” feature that can take advantage of the combined 18Gb/s now available, but its functionality was not clearly defined press time. Some current devices might get a firmware update to support the new spec.
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