There's no leak from the employee, the website, or the destination airport this time?
With the amount of XLR and 78X getting from now until next summer (8-12 in total?), there got to be more for YVR, right? I would expect AC to put at least 3 planes capable for long-haul flight next summer at YVR (just 1 more than peak winter), or maybe 4...
AC77 will likely take up an entire plane
Then the possible CDG and BCN would take 0.5 each
The other 4 destinations they are hinted (from YYZ/YUL) would also account for 0.5 each unless they are flying from both bases.
So there should be more? Or they all go toward improving existing route? Or AC going to put 80-85% of the resource to YYZ and YUL...