I still don't buy it. The language in the blurb is not typical Canon.
From Canon USA: This APS-C size sensor (22.5 x 15.0mm) has the same 3:2 ratio as film cameras, enabling an effective angle of view that is 1.6x the normal EF Lens focal length.
From Gizmodo: The 22.5 x 15mm sensor size adds an effective 1.6x increase to the focal length of EF lenses, extending reach at the telephoto end.
As we all know, there is no "extending reach" with a 1.6X (actually 0.6) sensor, and Canon does not present it in that manner.