Steel was cut for the seventh of the AOPS in August, and so construction of the ship is well under way. There remained a small number—like one or two—of design changes that still needed to be worked out.
I'll give you an example of one of them, just to paint the picture: Davits, for the launching and recovery of the boats, were still being worked through. However, they weren't affecting the overall construction design, and the resolution of them wasn't going to change the final configuration.