Current street wall vs. future street wall:
Source: My Photo
It looks like there will be a setback on the 4th & 5th floors only. There is a railing all the way across the 4th floor, and the elevation shows a shadow along the top of the 5th floor which would be caused from the 6th floor sticking out more than the 5th. That means it'll most likely look like the "Possible setback #1" model that I made.