Quotes from Minister Alexander:
"Henceforth, with the passage of this bill, residency will mean a physical presence in this country for four years out of six. We will require applicants to declare it over the period from the submission of their application to the day when they take the oath of citizenship.
Let me remind this House, nothing in those provisions constrains the mobility rights of either a permanent resident or a citizen. Someone can have the intent to reside, but then their plans change and they move elsewhere, not fulfilling the residency requirements for citizenship. They do not become a citizen, perhaps until later in their life. After they obtain citizenship, of course Canadians are free to do whatever they want as citizens."
and "We are confident that it is reasonable to insist that those who want to become Canadian citizens express their intention to do so. This will never undermine their right to free mobility or their rights under the Canadian Charter of Rights and Freedoms. It makes complete sense, when requiring that permanent residents spend a certain number of years here, to ask the people if they intend to reside in Canada."
Anyone who would like to know more should read the bill c24 house debate. http://openparliament.ca/bills/41-2/C-24/?page=1