Another poster posted a screenshot. https://ttlc.intuit.com/questions/4509145-illinois-state-tax
Ok ... that notice is badly written ... when you have installed the federal program and you get to the state section the option to download the state programming will be presented and you should not have to pay for it if you bought the Deluxe version WITH the state ( they do sell it both ways) ... you do NOT get it thru Amazon's site.
An exact date is not available yet and most state programs will not be fully operational until sometime in January or February. Watch for the availability dates her when functional :
Availability chart for the 2018 PERSONAL programs:
https://ttlc.intuit.com/questions/1908854-forms-availability-table-for-turbotax-federal-products-exc...
Availability chart for the 2018 State programs for the Personal returns:
https://ttlc.intuit.com/questions/1908857-forms-availability-table-for-turbotax-state-except-busines...
