<P> HDMI 1.4 b was released on October 11, 2011,, containing only minor clarifications to the 1.4 a document . HDMI 1.4 b is the last version of the standard that HDMI Licensing, LLC is responsible for . All future versions of the HDMI Specification will be produced by the HDMI Forum, created on October 25, 2011 . </P> <P> HDMI 2.0, referred to by some manufacturers as HDMI UHD, was released on September 4, 2013 . </P> <P> HDMI 2.0 increases the maximum TMDS clock to 600 MHz (18.0 Gbit / s). HDMI 2.0 uses 8b / 10b encoding for video transmission like previous versions, giving it a maximum video bandwidth of 14.4 Gbit / s . This enables HDMI 2.0 to carry 4K video at 60 Hz with 24 bit / px color depth . Other features of HDMI 2.0 include support for the Rec. 2020 color space, up to 32 audio channels, up to 1536 kHz audio sample frequency, dual video streams to multiple users on the same screen, up to four audio streams, 4: 2: 0 chroma subsampling, 25 fps 3D formats, support for the 21: 9 aspect ratio, dynamic synchronization of video and audio streams, the HE - AAC and DRA audio standards, improved 3D capability, and additional CEC functions . </P> <P> HDMI 2.0 a was released on April 8, 2015 and added support for High Dynamic Range (HDR) video with static metadata . </P>

What is the highest resolution that hdmi 2.0 can support