It’s been out about 18 months so little chance of it being replaced any time soon. (Even when Arrangers were selling like hot cakes it was usually at least 3 years (Or more) between models, now there is less demand you are probably talking at least 4 years between models)
Bill
According to insiders, and people working for Yamaha, atleast 5 years for the current high end instruments like Montage and Genos