I think this is all someones wish currently. I checked, and no news of a different model between the 65 and the 90 as of yet. It may happen, but it will be a while down the road from what I can see.
This type of thing can take a while. I have heard kioti is going to have a UTV (utility vehicle) over 2 years ago, but thats still in the works too. I wouldn't wait hoping its going to come cause it could be a long wait, kioti likes to do lots of testing before something new is released. Which is fine by me, I like working product.