It's August and based off of the announcement dates for some of the other parks in the chain, we're probably about two weeks away from finding out what Carowinds has in store for the 2018 season. It's all but confirmed that Planet Snoopy is transforming into Camp Snoopy next year, but what about Vortex?
Personally, I think it's guranteed at this point. Sure, this permit doesn't explicitly state that Vortex will be getting converted, but the fact that they're focusing on renovating this area is pretty suspicious:
Vortex Plaza Renovation
Renovation of the existing Vortex plaza for the relocation of an existing ride and existing game within the park. Work will consist of new pavement, storm drainage, and infrastructure.
I'm 99% sure that it's getting converted next year.