With Kathleen Wynne's popularity currently in the toilet (21% approval rating) one has to wonder if she will contest the next election. The Ontario Liberals still maintain they will balance the budget in the fiscal year 2017-2018. That will require cuts and wage freezes which isn't going to help Wynne's popularity to improve too much going forward.
If Wynne were to decide to not face the electoral music similar to Dalton McGuinty, she would likely have to announce it a year before the next election, scheduled for 2018, to allow a leadership contest and a bit of time for the new premier to try and turn the Liberal fortunes around.
Expect more media speculation in a year's time, especially if Ontario's economy stays weak.