If you ever watch TVOntario over the air and you're in Kitchener, prepare for a rescan. An announcement on a new digital change to channel 22 will happen, according to the site, sometime between October 26 and November 3rd. They intend to make the exact date known as they get closer. This obviously doesn't apply to cable or satellite viewers. 

TVO’s Over-the-Air signal is changing in the Kitchener area