7/16/13: May not look like it, but there's been activity in the past week +. They built the drain system to remove water from around the foundation. The "interior" has been leveled in preparation for the installation of the structured wood floor (the materials for which have been delivered and were stacked near the front of the house).
7/16/13: All that cardboard along the base of the walls is there for a purpose: they are called voids, and are there to allow for soil expansion. Where the concrete remains is where the caissons are supporting the foundation. The rest is allowed to serve as that buffer for the soil.
7/16/13: Backfilling should take place in a week or two.