You need a certain volume of sales to maintain a set schedule for new models. And Korg rather upset that schedule with the NEXT OS which could have legitimately been simply a new model (it’s amazing how little new sound or style content arranger players are willing to accept in a new model) and no-one would be talking about an overdue schedule...
I think, were I a Korg user, I’d just be grateful Korg gave me a new arranger for free (and a bunch of really good styles as freeware)!
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An arranger is just a tool. What matters is what you build with it..!