As seen from Parc jean-Drapeau, I clearly saw how big of an impact the CHUM complex will have when it's fully built. Along with the Solano project (2 more 20-ish floor towers to go up) and the Viger station re-dev (about 20 floors), and the Radio-Can re-dev, and who knows maybe an eventual Heritage du Vieux Port phase II, the downtown east-side will truly extend the skyline almost to the bridge.
En passant, speaking of Le Solano, here are some images courtesy of urbmtl posted on mtlurb