Is there a source which says which offices this applies to?It's for the busy passport offices like mississauga. For normal passport offices like London Hamilton they will entertain you even if it is more than 14 days but less than 45 days.
[The way I read the announcement is that they can/will take some each day - after having sufficient capacity to service the immediate travel applicants - which I think means those who line up early may mostly be okay. But I'm not sure.]