The base cladding is to be manufactured and installed by a joint venture of Solera/DCM. Solera does the glass part and DCM's fabrication division (MRP LLC) does the metal part. Then DCM puts it all up.
The cladding is rather interesting in the fact that it's not a glass wall. It's a wall of grating, either stainless steel or aluminum depending on who you ask, with prismatic glass panels bolted to it. There are to be 1 foot wide spaces between the glass panels vertically, so the building can breath. (All the ventilation exhausts out the base mechanical floors. The intakes are near the top of the tower.)
http://www.dcmerectors.com/
The glass for the base is coming from a Chinese supplier, the manufacturing of the panels is being done in the US.
Visual Aids. This is of the corner where the wall is slanted out, but the vertical walls are the same detail.

The wall is not straight because I couldn't hold the print flat for the pic, I managed to break my left thumb about a week ago. (Word to the wise, I don't care how much experience you have, don't try to fix a garage door opener by yourself !)