Little bird tells me that some crews are being rostered for Max difference training?
Hundreds of VA pilots have done the Max differences and still more have done training like UPRT and ZQN port qual in the Max device. Regardless of when the airframes turn up, it benefits the company: Max qualified pilots can do recurrent sims in the Max, reducing the demand on the two NG devices. But all accounts the Max flies nicely and the sim is a great device.