Okay let me be fair here. Comparing say the Rev. A Retina with say the Rev. A MBA is no comparison by any stretch. Though what I'm saying is, right now the Rev. A Retina is gold and has a chance to be platinum though probably will not reach that status until Rev. B.
As for the mini, I doubt we are seeing that much of an overhaul. If anything, we'll see more of an overhaul with Haswell probably along with the iMac and Mac Pro. 2012 will just be a speed bump.