Contractors are eyeing a spring completion of the 1-million-sq-ft main fabrication facility of Foxconn Technology Group's planned campus in Mt. Pleasant, Wis., but exactly what the Taiwan-based company will manufacture there remains publicly unknown.

Originally planned as a generation 10 large-panel LCD screen production facility, Foxconn scaled back those plans and changed the plant to a generation 6 facility one year ago. Officials said it will produce smaller LCDs.