this is entirely up to the content producers and not the bluray equipment or the aacs specs.
i don't see who exactly would force publishers in japan to such a thing, but even if it happened i don't think it's important.
concerns about this making things easier for the pirates seem rediculous to me. i'm quite certain aacs will be hacked and the discs pirated way easier at the software level, so noone will bother with pirating the signal through the connecting cables (which wouldn't be a 1:1 quality duplicate too)
and if aacs turns out to be a hard nut to crack, hdcp has already been cracked so pirating can still happen - even with the restrictions to protected digital outputs. that should be reason enough for the content producers in the usa and everywhere to pretty soon abandon hdcp and not restrict their discs anyway.
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