Well it won't make much sense if the King Kong attraction will be indeed located in jurassic park themed island, that's the worst thing they could do IMO, and make the whole ride in 3D wearing glasses. We may not even see a whole themed kong land...it just might be giant 3D screens outside while guests are riding the attraction.
I don't think they will go with 3D due to the ride will have Outdoor Sections and that was also confirmed with a AA outside so it wouldn't make sense for 3D to be on it if it goes out.