It will be interesting to see how this will proceed...I see a few options though.
1. Nothing will be done, and one county will be able to carry, though still unlawfully by IL state law, due to lack of prosecution.
2. The head State AG may be able to come in and "require" the county state attorney to either prosecute, or to be replaced by one who will.
3. Perhaps this will be "tip of the iceberg" so to speak which provokes enough movement to obtain a legal concealed carry permit system in IL.