Re: HDMI 1.3a vs b
Hdmi 1.3 added the ability for DeepColor, TrueHD and Master HD audio formats. The only difference between HDMI 1.3a and 1.3b is that 1.3b implemented stricter compliance standards for the manufacturers.
You will not see any different connectors or anything. You may see cables say they are HDMI 1.3b certified (ie from XLO/Ultralink or Accell). All that means is that they have undergone the 1.3b testing standards.