Since it is highly likely the KS9 will be released in the US while the KS8 is still available in Canada, you may want to be prepared to make a good comparison and decide which one is better. If the pattern continues there should be a price reduction on the KS9, and one would expect a step up in features. I’m not so sure it is obvious there will be a step up in features. The KS8 allows some minor customization with the app, but nothing significant. That could be where the opportunity for improvement lies.
As far as price goes, my recollection is that the KS8 was originally sold in Canada for $2000, and since introduction there has been a price increase to $2150 – possibly due to the weakening of our dollar. So it will be interesting to see where the KS9 will be priced.