While it will do those things, the addition was originally planned because Harvard was shutting off the steam so that they could use it for the Allston Life Science Project. The basement of this addition is a steam and power plant with a small cogen and lots of redundancy.
It's true. However, given some of the critisism of the original design, it didn't take much for the owner change direction opting for the glass so that the employees can see the sun once in a while.