Of the first 10 floors in your first pic, that will eventually just be 4 floors! They will eventually take out those first 2 lower floors and create a large open air plaza/entrance. After that, every other floor will have to come out to create those huge double height floors.
The tops of those new columns remind me of work at 1MW and 30HY with those huge angular joints. Those will support those cool angled support columns from the middle section of the tower.
After all the foster hate lately, I assume we can mostly agree that this tower will be awesome!
Here are some renders from above which show the plaza/entrance with the removed floors and the angled columns between the setbacks/breaks in the building