^ I came to similar conclusions. the description is almost content free.
If they are saying "most" of the data in hi-rez files can be thrown away vs CD data rates (because you can't hear it), aren't they shooting themselves in the foot or being self defeating ?
If its backwards compatible with PCM gear, then aren't we back in HDCD land, which is moot since we can have true 24 bit samples if required.
Looks remarkably like badge engineering, or a tax on Hi-Rez. THX for Music?