Marc - it's just a fascia built on a scaffold. It could be moved easily and bolted onto any building. It's being built there at the Merlin Studios.
It doesn't look like the station, but it's bloody big whatever it is.
I've gone through the plans. There's no mention of the way the station is to be built.
It says with regards the window and wall bits "Imitation Sandstone effect". That could really mean anything.
I'd assumed that they would build using the same technique as Battle Galleons (Breeze block covered in a spray to make it look like stone and then painted).
However, I now have my doubts. Looking closely at the plans, the parts of the ride that are out of site appear to be left as "crinkly tin" (like the back of NI). If the entire building is crinkly tin, then it's cheap ass and it's actually likely the building WILL be just a painted facade bolted on
So I don't know as of yet - nothing in the plans that confirms anything either way. I'd still say, looking at time scales, it's unlikely to be for the new ride - but who knows?