
The expansion renovates portions of, and inserts itself between, Seaton Hall (left in the rendering above) and Seaton Court (aka Mechanics Hall, right in rendering above). The situation is hard to grasp fully in the available renderings, but this video produced by CAPD Dean Tim de Noble is very helpful in understanding the project:
Additionally, Tom Leopold has documented the project's construction on Instagram (apdesignexpansion); here are a few highlights:
Although I can't make it to the building's dedication next month, I should be posting more on the project in the near future.