Common council has passed a change to the by-law which will let businesses decide what hours they want to open on Sundays. That means you could see some retailers opening at 9am instead of 12---although some businesses may choose to keep things the way they are.
Malls will have to make that decision as well. All the retailers will have to abide by the same rules.
The Day of Rest Act was first passed back in 1985. While some object to the idea of more Sunday shopping hours as unnecessary, the Board of Trade has said it could help our flagging local economy, and besides businesses should be able to make that call for themselves.