Shaw's new satellite is a third. They still use Anik 1 and Anik 2. The new satellite will carry all the new HD stuff and does not have a foot print that will cover much of the the USA.
We have not added the third satellite to our home system since we don't really need it yet and it will be useless on the rig south--we winter mostly in Mexico.
We have many Canadian friends in Mexico at this moment and they report that their Shaw service is still operating just fine.
I suspect we will loose stations as the older satellites wear out. What we will do then for Canadian Content, news, sports, etc while in the USA and Mexico is anybody's guess. We leave in a month and are keeping fingers and toes crossed.