Not really, the channels are going from Mpeg 2 to Mpeg 4 which only the newer 600 and 800 receivers will pick up. They have actually taken the BC channels off G1 and moved them to F2 for the snowbirds so when they cut the SD channels they will still receive them down south.
So even in Canada people are losing more and more channels as the conversion takes place. Everyone needs a new receiver and lnb or they will continue to lose channels which should be complete by 2019. All HD and No more SD channels.

You do need an elliptical dish for the new XKU lnb, so I do not believe it will work on your 1.2 meter dish. A 75cm dish works fine even in Mexico where my father-in-law resides.