YOW-YWG is increasing from daily to twice daily on mainline aircraft, starting at the end of April.
YYZ-YQT is increasing from twice daily on mainline aircraft to four times daily on Encore, starting at the end of June.
YQT-YWG is increasing from daily on mainline aircraft to twice daily on Encore, starting at the end of June (but still no connections eastbound from the west coast!).
There must be other changes as well.