My money is on Intamin. The last Intamin project (and one that broke the donkey's back) was Shoot the Rapids and I305 in 2010. Cedar Fair has a definitive split from the company afterwards (due in part to continued problems plaguing both ride's designs), and would qualify as a "renewed relationship" for future projects. Intamin Hypers/Gigas would be great to continue rolling out for the park chain.
As for the new roller coaster type, wasn't the quote "new to the park chain"?
As for the new roller coaster type, wasn't the quote "new to the park chain"?