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-Need to add some stuff about Profile 1.3 HDMI, but I'm not sure what's the big deal about 1.3 HDMI stuff... if I remember correctly, 1.0-1.2 will handle 1080p fine, and 1.3 is just for future 1440p... but none of our players [blu ray or hd dvd] will handle 1440p anyway. Why is 1.3 important?
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One issue is color depth that 1.3 will carry. Earlier versions were limited to 24 bit color information, but 1.3 allows for up to 48 bit color information. From my glossary:
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Color Depth
This refers to the number of unique colors a given system can reproduce or convey. In the digital realm it will define the number of bits used to define each pixel. For example, 24 bit systems can define 16.7 million unique colors and the new HDMI 1.3 specification allows for 30, 36 and 48 bit color depth allowing billions of unique colors. Theoretically this will allow for improved contrast ratios and better color transitions when displays are also capable of the increased color depth.
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Bear in mind however there are very few displays that will allow for such color depth. Most are limited to about 16.7 million colors.