You will have nothing to upgrade. You can ignore this thread and pretend it never happened because you will NOT be getting an mpeg 2 box for HD. They have only provided Mpeg4/mpeg2 boxes for HD for a couple years now.
+1
Relax, all the VIP receivers are MPEG4 and thats all that dish has been installing for HD installs since 2006.
The upgrade has nothing to do with you.