I just don't understand why it's such a BIG secret.

I don't think it will hurt california or hawaii sales since they are on the west coast. As far as AKV or SSR I don't think their sales will decrease since those
dvc's have a different theme and charm than crv and probably also a different price (cheaper). I also agree with the op that all this secrecy is a negative.
I also tend to believe that it may be a dvc from the other thread which an op stated that disney had a filing with the sec which stated the number of dvcrooms that are currently being constructed which was greater than the number at akv. So maybe it is a dvc.

or not