My guess is they did nothing with the 2019 but stopped understating the power.
The 209hp claimed from 2017 is around what it makes on the rear wheel stock. The 230hp claimed on the 2019 seems to be closer to its engine hp.
Without reading to much into it, if, claimed revs where 11500, then it is still restricted and quoted "sales" performance figures are probably at the crank
With the new BMW (apparently) hitting 200+ at the wheel on a normally aspirated bike, you would have thought Kwak would have gone fook it, have some of this ????