According to lovely folks from Comic Book Movie:

“Autumn Frost” aka Zack Snyder’s Superman will be doing some filming around Dupage Airport!
I was driving by this weekend & noticed a few production trucks by the local grocery store. I was curious & decided to browse around West Chicago Site for clues to what movie would be filmed here in town. As I read thru the city counsil meetings I noticed “Autumn Frost” was brought up!

I will drive by the airport the next couple of days & look for clues to what they may be filming. I will keep you guys posted!!!