Today a SMS agent found me what appeared to be "Z" inventory on a DL-coded AF flight, CDG-JFK.

She said she wasn't sure if it meant an upgrade seat or not, and advised me not to take it, for fear it was actually the "Z" class of service on AF, which is a coach seat.

She did say, however, there are plans to allow PMU use on AF, the way it's allowed on KL. Unclear whether what she found was the loading of inventory in advance of that announcement, or just a fluke.

Anyone know about this?