So, four under construction, 2 each at HP and HD, and then the pics of this other location? Sounds like they have made up their mind and are comfortable with whatever design they have and are going to move forward without a drawn out testing of the first couple before committing to lserial production.
Interesting, and will be more interesting to see how many other places build them...and ultimately how many.
I was pointed out on CDF by iconoclast that the mystery 056 is actually the upper structure module for the fourth hull outside HP's assembly hall. It's made in a separate plant onsite and I assume it's transported and will be hoisted in place as a single module. It's amazing that HP is able to do that given its extremely limited factory space.