Court of Appeals, IIRC, told them in December that they had six months to write a law allowing for carry by citizens. Their six months is up in June (I think on the 1st, but not sure.) If they fail to pass such a law, and their current law criminalizing the act is voided as unConstitutional, they will by default go to Constitutional Carry.
There has been much to-do about Illinois turning into the "Wild West" and many other such pronouncements, all of which will be proven wrong, of course, though if IL was to "become the Wild West", there would certainly be less crime there.
Time will tell what happens.