Here is an article showing the planned internal configurations of the renovated Stade Olympique. The stadium will have configurations for concerts (66,179), soccer (52,709), CFL football (48,658), and NFL football (50,378), meaning there will no longer be a baseball configuration.
It suggests as well that the jumbotron at the one end of the stadium will remain at this time, implying that earlier potential plans to finish the seating bowl and install a new jumbotron on the technical ring is not in the cards (at least for now, it is possible that this could be phased as a later renovation after the basic creature comforts are brought up to a better standard). There appears to be momentum growing to get the internal renovations greenlit, and it looks like CF Montreal is planning on becoming a tenant due to the MLS winter schedule change.