i got mine upgraded as well :-) usually i will buy Biz class ticket outright..
Date : 18/4
Route : KUL - MEL
Minimum Bid : RM850 (i think)
My bid : RM1005
The biz class was full on my travel day, not sure its bcoz of the holiday or what.. but i really dont feel the 'special' treatment anymore in business class where i normally does like, they will address you by name and more attentive..