I do not think that a new coaster will be built this year, but soon. I think if Son of Beast gets torn down than KI loses a Big world record. (not to metion their second tallest coaster in the park. You can already see that KI would never think about taking out SOB. They took out the loop, and keep trying to improve it. See a trend here. If it comes to that, they will need to fill the void.
I do not think that KI will get a TTD (Top Thrill Dragster) if that is what that means. Cedar Fair would never let Kings Island Steal ther thunder. They would never make it taller than the original one, and if it was shorter, what good would that be.
As for the ecomey. (Sorry not spelled right!) I thik that buy the time they start building Cedar Fair will be in much better than before.
Not so much as a tall ride, but a really fast ride the maby "Area 51 the ride"
*Disclaimer this post is not to be taken as fact. Just a opinon of my.