Just flew yesterday HKG-SFO on a Cathay A340-300 in coach class. Definitely no AVOD. The PCU was fixed on the armrest, and had no start/stop/pause buttons. It had "StudioCX" though, which just appears to be a menu-driven interface into a bunch of channels. Once you select a channel, however, you are dropped into the middle of the program or movie. StudioCX is definitely not synonymous with AVOD.