Do I think the HOX will end up with it eventually? Yes, I think the unbranded one will. Do I think carrier branded ones will? Some will, eventually. AT&T will never get it though, based on the fact that we are starting to wonder if we'll ever even get a 4+ update. Technically HTC is part of that coalition that says that they will update their android phones for 18+ months after release, although most manufacturers seem to have basically started ignoring it.
Do I want it on my carrier locked AT&T model? Heck yes, although at this rate my phone will be running cm by the end of the week.