HDMI 1.0 - This is the first version of HDMI. HDMI 1.0 combinesa digital video signal (standard or high-definition) with a two-channel audio signal over a single cable, such as between an HDMI-equipped DVDplayer and Television.
HDMI 1.1 - This version adds the ability to transfer notonlyvideo and two-channel audio over a single cable, but also addedtheability to transfer Dolby Digital, DTS, and DVD-Audio surround signals,as well up to 7.1 channels of PCM audio.
HDMI 1.2 - This version of HDMI adds the ability to transfer SACD signals in digital form from a player to a receiver.
HDMI 1.3 - This version includes improvements in both audioandvideo capability. With the advent of Blu-ray Disc and HD-DVD,version1.3 adds the ability to transfer the digital bitstreams for thenewhigh resolution audio formats: Dolby Digital Plus, Dolby TrueHD, andDTS-HD.
HDMI 1.3a - In addition to the above audio improvements,HDMI1.3 and 1.3a increase the amount of video bandwidth that canbetransferred from a source to a display. This means, that in additiontothe standard 24-bit color depth we are used to, HDMI 1.3 and 1.3ahavethe ability to transfer color depths up to 48-bits, and can accommodateresolutions much higher than the 1080p resolution standard that is inuse today.