The license is for 61.5 degrees west on the equator. 110/119 are their slots that will cover the entire US. But, too many old receivers point to 110/119 for them to do anything dramatic like change them to MPEG-4. So, the experiment (I mean strategy) is going to be on 61.5.
Dish has DBS satellites at 61.5, 110, 119, 129 and 148
The have licenses for 86.5 and 77 provided they do not interfere with Canada. They have a satellite at 77 pointed at Mexico.
Dish's problem throughout the the years is that they have not had a single plan to provide service. They are constantly changing their minds and what happens on satellites. Who knows if the 61.5 project will work out completely or if they will change it mid stream or end up abandoning it. With Dish you never know.
Ideally they would have spot beam satellites at 77 and 86.5 to provide HD locals without interfering with Canada DBS providers, and use 61.5 for all the national channels. This would give them most of the lower 48. But, they bought the spot beam satellite at 61.5, so they are putting spots there.
They could change 110/119 over to MPEG-4 but then they would have to spend billions to update all the receivers.
DIRECTV built new satellites for new slots. Those wanting to see the new satellites have to upgrade the receivers. The existing receivers continue to sell the old slots. DIRECTV appears much more organized with a single dish solution able to see all their satellites.
Nice analysis!