That area, if you include Roaring Rapids, is enormous, so it could be both. If such it would be the largest expansion in the park's history a la what Dollywood is doing. Though, of course, I'd be stunned to see Six Flags lay down that sort of significant one-year capital even for their flagship park. If they are saving up, then this has got to be something big. The only things I can think of are:
A) The world's first T-Rex model
or
B) A giga
Those are the two things that would really show SFMM's muscle, and something that the park could use. Granted, I really want that giga but B&Ms can be costly.
Certainly interesting.