Officials at Montreal have confirmed that they successfully negotiated with FOM (read: Bernie) to have a place on the 2010 calendar. They have said:

The race is important not only for Formula 1, but also for the teams, manufacturers and sponsors. I am also happy for the Canadian Grand Prix's many fans, because they are true F1 enthusiasts who appreciate the real value of the spectacle and the competition.

I'd like to be nice and eloquent about this, but there really is only one thing to be said: YES!