Trudeau
was quoted in the French-language press reasserting his commitment to electoral reform on Tuesday.
I think the big issue is not going to be political will (the Tories will likely fight it tooth and nail, though).
The big fight will be getting consensus on what form of PR to implement. There are major divisions even among PR advocates, as we saw in the recent debates over the past few years for ranked ballots in Toronto. And if you want to get a PR advocate steamed, for example, tell them how much you like preferential voting (I see positives, and negatives, of preferential voting, but my experience is that saying that it has positives is a good way to get oneself compared to Hitler).