It's unfortunate, but the Droidcon planned for Montreal has had to be postponed. The website uses the term cancelled, but I think it's just going to have to pick a new date, and a new date has issues with locations, etc... so it'll take some time to do that.
What happened was that Droidcon Montreal was scheduled for May 19/20 this year, and then Google I/O came along and picked the same dates. It'd be very hard for the community in Montreal to compete against the large pull that Google I/O would have.
I'll be keeping my ear to the ground to see when it is rescheduled, and hopefully I can be there!