I got my first and only OpUp in February from SIN to MEL on EK, I was travelling home with a friend he was a few people ahead of me at the gate, they told him he had to be moved and he automatically thought that he was just being moved to another Y seat as the person in front of him was, he asked to be seated with me, I get to the gate and they cross out Economy on the boarding pass and write Business, most exciting news ever.