They have years and years to go.....just being able top play styles on a device is no big deal.......it must be able to have a navigational cohesiveness to be able to operate it as an instrument in real time as good as or better then the arranger kbs of today and That is a very tall order. At the rate they are going we probably,y won't be here anymore when that happens.. That said what's wrong with what we already have now? except for a few workarounds today's arrangers are more than adequate for most musical purposes.