Brand new 11,245' runway 9C/27C is now apparently open and in use for aircraft operations, per airliners.net forum.
Here's the new FAA diagram.
Once the work to extend 9R/27L from its current 8,000' to 11,500' is done, then ORD's runway work will finally be 100% complete, making the airport the first one in the world with 6 parallel runways, with 4 of those being very long, ranging between 10,800' - 13,000'.