OK, I swore i wouldn't do this, but....
Just got off the phone with a tier 2 tech support rep.
(My home, search, and camera buttons are 100% unresponsive)
My reconditioned (yay! </sarcasm>) dx is coming tomorrow.
She was a self-confessed geek, programmer, and android junkie herself. On a whim, I asked THE question, and actually got a sensible, believable answer. Take it for what it's worth...
She said that Moto released 2.2 to Verizon, and the rollout will begin the first week in October on a rolling basis (i.e. not everyone at once, but that won't stop us

)and last through mid-November.
As I said... take it for what it's worth. Steve Jobs may say the same thing if you email him.