Decision is here. They are clearly encouraging Illinois to adopt a concealed carry permit statute. Posner (who is not our friend) is clearly distinguishing his opinion from the 2nd Circuit's recent decision upholding New York State's "may issue" concealed carry permit law. I think he is hinting to the Illinois legislature that they should adopt a shall issue law.
UPDATE: One of the Chicago newspaper articles included a comment by a reader, warning that the streets of Illinois cities will run with blood. Perhaps...but how could you tell the difference?