We knew it was coming
We knew when MMAP (Minimum Manufacturers Advertised Price) pricing came into effect things were going to change. Previous actions by Canon towards B&H Photo and others to limit exposure into Canada were only going to lead to an outright stop in shipping certain Canon imaging products across the border. Nikon as you may not know has already implemented these restrictions.
We're most likely going to see this sort action for both DSLR cameras, premium PowerShot's bodies as well as lenses.