We are thinking of booking Air France Business Class (using Flying Blue Miles) from Boston to CDG on Sept. 1 on flight AF0321. It shows the plane as an AirBus A350-900. When I called Flying Blue to ask some questions including whether we would have the new business class seats the agent said she could not answer that question. Am I correct all the A350-900 have the new seats? Can I rely on the flight info for the plane that is scheduled understanding there can be last minute switches?

Thanks.