I've been a lurker here for a long time, and I signed up just to answer your post.

The Montréal family is of course so secretive and the Canadian laws so loose and the Quebec police in particular so corrupt that it is almost impossible to know for sure what is happening. But from what I have heard, and I am sorry that I cannot recall the source material, Francesco Arcadi is the new boss, although he is in prison until 2017.

In the meantime, they say Rocco Sollecito is the street boss until then. Sollecito's son Stefano is quickly working his way up the ranks as well.