It seems like Air Canada has been very quiet recently about their new code-share flight/destinations.
Just found that Air Canada has begun it's code-share service to Santiago de Chile through Miami, opb United Airlines.
Air Canada has also add several code-share route with Austrian Airlines. In addition to the current YYZ/YUL/LHR-VIE, AC code has appeared on AUA Group's Austrian Domestic flight.
Not sure why AC is being quiet about it.