All of Canada's carriers already have or are about to switch to HSPA networks, unless I'm missing a small regional somewhere. Bell/Telus launched their joint HSPA network on the same 850 frequency as Rogers, and MTS and SaskTel have either launched or are about to launch the same. The new carriers (Mobilicity, Wind, Shaw, and Videotron) are launching HSPA networks on the 1700 frequency. I don't know what Eastlink's plans are.
Bell/Telus still operate their CDMA networks but generally only for feature phones now. There is speculation that they may regulate them to discount brands. Public Mobile has launched a new CDMA network in Toronto and Montreal this year.
CDMA isn't quite dead, but it also isn't going to be a player for high-end smartphones in Canada.