I've just got a horrible feeling we'll end up waiting until late May to get it. iPad didn't ship until late May 2010 in the UK (not sure about Canada and Australia) and it looks like the Watch will ship almost 5 years to the day of the US iPad Launch.
Late April-Early May I can deal with, but late May it going to be excruciating!
I'm in Canada here, hoping it will launch same time at US, I don't want to wait till late May. If Apple does have 5-6 million units ready for launch maybe thats an indication it'll launch in multiple countires.