The mayor is expected to demand registration of all handguns, mandatory training for gun owners and a limit of one handgun per person. This last novel idea comes from Corporation Counsel Mara Georges, who according to the Associated Press "says the court ruled people can have a gun for protection, but didn't say they're allowed more than one."
It's not like we expected him to just give up. He and his fellow travelers will pull whatever they can out of their ass to avoid the end consequences of the Second Amendment. Then when they've bankrupted their city and/or are in the grave the people of Chicago just might get to rejoin those of us able to exercise out Second amendment rights.