Here is a view of the Citi Field Rotunda and the east wall of the new stadium:
As you can see, they have started adding the siding to the walls. I believe Citi Field now has all its levels. I took a walk around most of the construction area last night before the Mets/Braves game. The new stadium seems much smaller than I expected, but I guess anything would compared to the behemoth that is Shea Stadium.
And again, I am in awe of the pace of construction. Here is the same view of the Rotunda, as of April 30th, 2007:
And the same angle as of May 31, 2007:
Amazing progress. By Opening Day, 2008, the new place should look complete.