Is the wall to separate terminal inbound and outbound pax?
No, as there will be a path between the two sets of doors. A staircase is being built across the entrance that will bridge the wall.
Money saved on the canopy will help to pay for the demolition costs of the 2 year old walkway and third core. One can only speculate what it cost to build.
April 2016 shows the span going in. Think it was open for just over a year.