Understand that I have never argued that SD was NOT going away. Having SD go away is certainly going away despite the fact that many of the programs filmed in the past were not in HD and will continue to be broadcast. The question is what's going to happen to the 101 slot. The satellite there must still broadcast on the KU band (this does not relate to the content being broadcast) or DTV would have to replace every antenna in the system as the 101 LNB is KU band only.
So, if the 101 is still broadcasting in KU (like all of the Dish satellites) then the domes would/should still receive some programming and it would now be in HD!