They have only sonsolidated dispatch in the southern districts. Rumor was the ISP had backed off on further consolidation. From what I hear now the ISP is moving forward with consolidation of dispatch centers. Don't be surprised to see the northern districts outside of Chicago being dispatched out of Sterling (1,16, 17 and possibly 7 and 14). Districts 11, 20, 10, 5, 8, 18 will probably be dispatched by D-9 Springield. District Chicago plus D-5, 2 and 21 will probably be consolidated.
From past experience don't believe anything till it actually happens. Rumors abound concerning how the consolidation will be or not be funded. From the limited time I've listened to new center in Du Quoin the Telecommunicators are not always handling traffic from their previous district. There have been times where ISPERN broadcast were not transmitted on the appropriate towers. They are getting by with the day to day traffic but it is going to extra confusing during major snow storms or severe thunder storms and tornadoes. Think of the hassle of trying to keep track of crash report numbers for 4 districts plus tow #'s, Field report #'s. These are minor compared to knowing how to contact the appropriate ambulances fire departments and tow trucks for such a large area.