There is also a very large model being sculpted in one of the soundstages at 1":1' scale. Between you and me, that is huge; a 125' structure would execute to 10.5' tall on such a model. It is suspected that the subject of this thread is what this model is for. Old guard here, think about the 1998 model for IOA. That was probably only 1/4":1' scale.
Also, in the same building, behind a giant partition is another project being fleshed out and the project is considered very secret. I won't mention here what that project is presumed to be but I will tell you that you already know about it.
So, both of the above are secret, but one far more than the other as it is called super-secret. You decide.