For now it's speculative, though Screamscape is reporting GhostRider may be poised to receive a full RMC topper track conversion for the 75th anniversary of Knott's Berry Farm's Ghost Town area. This would be possible regardless of whatever contract may exist between Six Flags and RMC because that is applicable to the Iron Horse tech only (and I can't imagine could be lasting much longer - it has been said that the price for said conversion will increase after the contract is up).
Given Cedar Fair is a classier company than Six Flags, the topper track makes sense for them as they'd be able to preserve their existing woodies while drastically improving ride experience. Lance even goes so far as to mention that should 2016 see a GhostRider refurb that Mean Streak would be a shoe-in for a glamorous RMC makeover as well.
Thoughts/comments/complaints? As far as I'm concerned, this is an exciting proposition and probably a better solution for aging wooden coasters than converting them to hybrids.