Your current A/V receiver and new HD audio formats
I wanted to share this link to Dolby Labs where they discuss how DD+ and DD Tru HD will work with our current and future gear. It seems that at least these two formats will be compatible with our current gear and sound better than the audio from standard DVD because the original source will be better. It will still be a PCM mix down of the original though. So my take is if you want best audio performance and to be compatible now and in the future use your multi-channel analog ins/outs. *PAY ATTENTION* > Even if your newer HT receiver says it will accept/decode the newer formats, it may not. According to Dolby this will depend on the disc whether it will allow the unprocessed signal bypass the disc players internal processing. Dolby says this will be a rare disc. So don't upgrade your receiver or wait for new receivers to get HD disc players, if you have analog inputs, you are set to go NOW.
http://www.dolby.com/consumer/technology/trueHD.html
If I find anything on DTS HD I will be back.....