The Toronto concert reportedly is not the only canceled show as there are at least three other dates which are rumored to have been scrapped.
One concert from the on-going "American Idol" live! tour which has been officially scrapped is the one which was scheduled in Toronto. The gig was supposed to be held on September 9 at Air Canada Centre but now it's not available anymore.
Various reports also mentioned that three other scheduled shows in Buffalo, NY, Portland, ME and Cleveland, OH have also been called off. As a result, some upcoming concerts like the ones set in Bridgeport and Chicago are moved up.
The Bridgeport concert has been rescheduled from September 13 to July 9. Meanwhile, the Chicago show was confirmed by Lee DeWyze to have been moved from August 30 to date 28 in the same month. "I hope you can all still make it," the winner of season 9 wrote.
More info about the list of changed dates can be found on Live Nation official website.