I saw this photo on Gio's
website. What is happening on the west side of the building here? According to the renderings, the east and west sides of the building do not go as high as the north and south (with reference to the outside sections, not the inner polygon). But in this photo, it looks like they are building up the west side so it is of equal height. Interesting...
EDIT: Oh, maybe it is just a temporary structure so that the elevators can bring supplies to the top.