I talked to Matt at Russ Dunmire Mazda, he said all we are waiting on is the bracket for the radio and it is a done deal. I can't wait to have some boooooost under my feet!
Well in Canada I have actually seen them move the drives under their own power so I don't think keys are an issue here. However the 3 that I did look inside still had no head units so there could be something to the bracket rumor.