The library is progressing on schedule. I have heard people suggest the box in the front right corner of the photo is a form for an elevator (northeast corner); it is actually a window well. The basement should be well lit. Notice the square concrete pier caps scattered throughout the ground level. These pier caps take the place of footings (there are no footings).
They are building the tunnel westward and as soon as they have cleared the perimeter of the plaza they will begin the plaza with the objective of completing it prior to the start of school this fall.