Shaw Direct In US And Mexico

We use the same equipment that came with our home installation two years ago, with just another dish. No problems in the American southwest and northern Mexico in our experience, and likely much farther south. But if you upgraded to the signal that came from Shaw Direct's 3rd satellite, lifted in place a year ago, intended to give all high definition, I understand its foot print is much more limited, so you will not get those signals in warm winter climates. Recently I've been seeing several RV's get rooftop dish installations that use Shaw Direct dishes. With their destinations aimed for those warm winter climates, will they soon become useless - a pretty high price to pay for falling prey to outdated equipment. Has Shaw developed a cut-off date for ending any futher use of their popular signals that we get out of Canada?