It looks like the slab prep is ready for the plumbing rough-in.  Much of the plumbing supplies needed have been dropped off by the slab.

It's still a little weird (and worrysome) seeing the slab prep.  It just doesn't look like an almost 2000 square foot structure.  This evening Janice and I will take out the tape measure and check the dimensions.  It's just too hot to do it now.
I know that seeing only the slab makes the structure look small.  Everything should fall into place once the framing begins.