Canada doesn't really have an air force: it has a unified military rather than separate branches. However, with the elections having taken place and the Liberal party with Trudeau as prime minister, Canada is likely to pull out of the F-35. This was one of Trudeau's campaign promises and he's already fulfilled the promise to withdraw Canadian F-18s from the IS fight in Syria. Given he kept that one, the JSF withdrawal seems certain.
So what will Canada do?
There is likely to be a wide review of what the air forces are meant to do. Others are stating the Canadian air defense policy is a joke.
We shall see what our sibs to the north do. Will it be the more of the same or...?