These include rough sketches, renderings, and construction photos. (Note that the above photo is not very recent.) Hopefully we'll be getting some shots of the completed interior when it opens to employees later this spring.
The Pixar Times got a special tour last week and shares the news that "Pixar films that are in pre-production will be moved to 'Brooklyn' [the studio's internal name for the new building], while the films that are closest to release will remain at the main building."
As a side note, I was recently able to uncover the total cost of the expansion in an obscure construction industry document: $80 million. That includes the $15 million in materials and equipment that I reported on back in 2009.