The HDMI 1.3 spec was released today:  www.hdmi.org

Of significant note is the support for increased colors and DTS-HD Master Audio and Dolby TrueHD.  So if you are thinking about a new AVR or hi-def player, you may want to sit tight for awhile if those features are important to you.

"According to announcements by manufacturers, new high-definition DVD formats (HD-DVD and Blu-ray) and game machines (including the Sony PLAYSTATION® 3) will make use of capabilities added in HDMI 1.3. Digital televisions will be able to present images that are closer to real life than previously has been possible. These will include LCD TVs, plasma displays and rear projection microdisplays. The PS3 which is scheduled to ship in November 2006, will be the first source product to provide such high quality imagery to these displays. It is expected that hi-def DVD players will follow early in 2007 with HDMI 1.3 support. A/V Receivers that can decode DTS-HD Master Audio and Dolby TrueHD will start to show up early in 2007 as well. Please check with the manufacturers for details."