It's usually the same day, as in within 24 hours, not necessarily the same calendar day wherever you happen to be. For example, mine switched to "preparing for shipment" Thursday about 11:00 AM Eastern time, and switched to shipped sometime between midnight and 2:00 AM Friday.
Delivery is showing as Wednesday by noon. I'm assuming it will make it to Anchorage or Memphis later today and spend the weekend there, flying to Calgary to arrive there Monday morning - after which it should REALLY arrive Tuesday in Toronto, so I'll be interested in seeing how they stretch it to Wednesday. And it's no faster than their regular free shipping.
Thanks for the reply, not sure when it changed though. Hopefully I'll get it next week.