I got back from Toronto on Friday night. No LTE at the airport but I had two bars at home on my iPhone 5.
Coverage is pretty variable - good in places, bad in others - but it's there. Of course you can always fall back to the HSPA+ network.
Yes, Rogers has had LTE in Regina since October but SaskTel already has it in White City, Balgonie and Lumsden and Rogers' LTE does not work in any of those places. In fact, Rogers is EDGE in Lumsden, not even UMTS/HSPA.