I've not seen HD on NFLX for a few months. I called Netflix and the tech said essentially "we can;t talk about it but just google the subject and you'll find the answer." I said "oh you mean the Cogent peering thing?" He mumbled "uh huh."
The "Cogent thing" is a service dispute Verizon is having with Cogent which is the tier 1 provider that feeds most netflix content to Verizon at least in the northeast.