Movies filming in Chicago

So, I'm in Chicago for training. In the lot next to me, there's a bunch of movie lights, and trailers.
The training facility is on Wacker Dr, and according to http://www.thelooplife.com/batman-the-dark-knight-back-in-chicago/, The Dark Knight is current filming on Wacker. I wonder if it's them?

More chicago movies

well, it's been confirmed by someone associated with the training facility. Definitely The Dark Knight filming outside, apparently from 7pm till 6am. Maybe when it's not raining I'll try to grab some phonecam pix.

ETA: then again, filming at night != phonecam pix. We shall see.