Well like the title says seems like us Canadians are always last to get anything for that matter.. Do you think will see a CDMA version first or a GSM...
Since none of the Canadian carriers are talking about rolling out WiMax, and CDMA is "legacy" technology, we won't see the EVO 4G up here.
What we might see in the next year or so are LTE devices (the "other 4G"), and you can expect Android LTE devices from all the major players.
But probably not until Verizon and/or AT&T roll out their LTE networks first, and eat the development costs of new handsets.
If it's just the larger screen you're digging on, I expect all the handset makers will be pushing out 4-4.5" screens in the near future (Sony already has a 4", Motorola is making a 4.3" unit for Verizon, and so on).