Personally, I don't care too much about what spec of HDMI that is in any of my devices, as long as I have a receiver that can receive 7.1 LPCM and a player and/or PC that will take the lossless versions of DTS/DD and convert those to the LPCM to send to it.
All the rest of that stuff doesn't matter all that much to me.
(And yes, I'm crossing my fingers that the ATI R600 video cards will allow this because they'll be the first cards to output HDMI audio from a PC.)