Not known at the moment. But yes, after 3rd Feb you'd have to land on one of those 4 airports.So if we reach canada after 3rd of feb we have to quarantine in hotel? Or the date is not decided yet?
Official advisory:
As soon as possible in the coming weeks, all air travelers arriving in Canada, with very limited exceptions, must reserve a room in a Government of Canada-approved hotel for three nights at their own cost, and take a COVID-19 molecular test on arrival at their own cost. More details will be available in the coming days.