That thread that this was beign discussed in was started in March. Current windows phones at that time on ATT did not have VVM out of the box. You had to get a rep to provision your SIM with LTE to get it, but since the phones were not LTE phones, reps were not doing it unless they didnt care and did it anyway. So a lot of users could not get VVM prior to the lumia on ATT.
Originally Posted by VizagDude
It was already announced that the lumias will have VVM on ATT, the issue is not having it, but how to provision the phone to have it. Unless the rep initiates it, phones wont have it unless requested during the sim provision process.
HD7 is irrelevant since it is a tmobile phone. I had a samsung focus s and did not have VVM and couldnt provision since my phone wasnt LTE. I have a 900 now and i do have VVM.