I'm flying YYZ-YYC today, and my AC153 flight just got switched to Rouge.
I had a curious "Diabeetus, your seat changed for your trip from Toronto to Calgary."
I was moved from 4A up to 2A, and the seat map only shows 2 rows for J. I'm happy that I was protected in J with this metal change probably because of SE status, but the flight was full in J on the mainline 321. So that means half of J has been downgraded into Y.