I think arrangers and those who play them will stay around. But things are changing as they always do. Roland is producing one arranger (or possibly one line) for the world market. The BK9 was the last of the BK series introduced and the first discontinued I believe. So it doesn't appear that Roland intends to make a true top of the line anymore. The Yamaha Genos will probably be more like the Montage with real time knobs and so on. This indicates that Yamaha knows they have to appeal to the younger customer and the older player is on the way out. But arrangers will still be around as they are popular outside of N. America.