Of course it would be "nice" if... But we need to be realistic: we pay for what's in the box and that's all. Everything that we eventually get later, is a bonus (part of advertising actually) or is necessary for a product to function as intended (i.e. firmware update). I'm not defending Yamaha, but that's how it is.
Means, if newly released keyboard isn't "fresh" enough for me (compared to what I have), then I just won't buy it.
Bogdan