Unfortunately, all three systems (the Revolution included) will support Dolby Digital, but not DTS, which provides far greater sonic benefits. With Dolby Digital, they will likely not even support DD EX, which provides for an added rear center channel.
Also, it looks like Blu-ray has won this match (which it was obviously going to win, Sony being a primary supporter of it) since HD-DVD discs are only going to be supported by the Nintendo Revolution...
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