If you bought your phone unlocked, you'll likely get it soon if you don't have it already. If it is locked, you'll have to wait for it to become available in Canada. Sony hasn't announced it's Canadian release yet. Only for northern Europe so far.
So far only the UNLOCKED Z3 version of the device has had the update released. The carrier versions have not yet been released yet. None of the other carriers have posted their releases yet either.