Korg updated the Pa600, 6 years after it was launched, but Yamaha doesn't think about us, their customers, that's why we don't have the software they use to create styles or super articulation sounds.
Rodrigo
Korg may have a history of issuing upgrades to keyboards but Yamaha clearly does not. We know this when we buy, so it’s hardly a case of shortchanging customers. We evaluate what is on offer at the time then decide. I imagine this is what you did - and chose Yamaha.
Frankly, I can’t imagine that the thought that some unknown upgrade, to some unknown feature, in some unknown future year, might maybe happen, would influence buying decisions. So maybe it’s Yamaha who gets this right!.
Mike