Was on that flight on July 25th. Full flight. Overbooked in Y by 30+. Upgraded a few to J. J was then full and they upgraded 5 people to F. I wasn't too happy as I was already in F and was looking forward to a quieter cabin but I understand these things happen.

I was talking to an agent who escorted me through security and she said they had to reroute some passenger through Taiwan on China Airlines! For some reason they didn't put them on SQ!