As I understand it, if the link bridge is built it will only be available for emergency/ airport use and not for the public.
I am pretty sure some of the original documents have been superseded so not sure about the top floor and link.
Looking at the work schedule the MSCP should be completed by July 17th. at the current rate they might just make it!!
EDIT- Looking at the photos there is only four floors above the ground floor drop off area being constructed so presumably the fifth floor has been scrapped?
Maybe this is due to line of sight from the control tower?