Lucked out on YEG-YYZ. Was 14/14 with all checked in for J - I was #1 on the upgrade list. Decided to board towards the end of zone 1 with my Y BP.
When BP was scanned the GA stopped me and said she had a message from the concierge that they were expecting a J pax might not make the flight. I was welcome to wait or go ahead and board, but to watch my phone as I may get upgraded.
Decided to board since I wanted to ensure I’d have overhead space for my carryon. After about 15 mins in my seat I saw the GA walking down the aisle with my new J BP in hand. It was a nice way to start the day.