At this time the available daylight savings schedule for 2011 are showing 74A. But usually timetables for that period are not fully finalized until sometime in Jan. So it may still be subject to change.

YYZ is getting 2 additional weekly 77As in the upcoming winter schedule, so there may not be enough 77As to go around and do 870/9 daily. Hence the possible reason why 3 xtra weekly 74A is put back in the winter schedule.