Austonian.
Looks like the north half of the 4th floor has been poured.
I've been trying to learn a little more about how these buildings are put together. In any technical field, learning terminology is half the battle, so I've been looking up unfamiliar words as I run across them. I believe these blue cables are called "post-tensioning cables". After the concrete is poured and set, the cables and tightened to apply stress to the level before adding more weight to it. So, post-tensioning cables are used to pre-stress the concrete. Still not really clear on *why* this is done.
These are the ends of the post-tensioning cables. After being put under tension, the ends are tied down and trimmed, and the holes are filled in.
You can see the "flying forms" mentioned last week in use here: