According to a cartt.ca article, TbayTel is currently in a soft launch of its Microsoft Mediaroom TV service, with a commercial launch planned in November to 60% of its market in Thunder Bay. They plan to cover 82% of the Thunder Bay market by the end 2012, representing approximately 7400 homes passed. They are aiming for an eventual 25% TV market share. TbayTel is also experimenting with FTTH technology to help increase its TV footprint.
They will offer HD, whole home PVR and VOD services including free local VOD content, such as news, sports and community events, as well as a “live interactive dashboard” which includes the local weather, movie listings, and lottery numbers.
My suggestion is that if you really want the service now, you can call and ask if it's available to your location yet.