Well yeah if you want to renew it. You call them up and tell them you are out of state and you will be for more than 90 days and they mail you the application to the Georgia address. Well from what I remembered, for renew process, I needed my 2 illinois residency documents and fee and probably my passport(cant fully recall if it was needed for renewal).

No they don't tell you to apply for GA license. lol I went to illinois one day on a plane and took taxis to get to DMV and hotel and all that hassel. I don't know anyone there and didn't have a car either at that time. For renewing, I did it all via mail and phone calls. Thank god I did that. It was worth it! At least it allowed me to drive to get to college and work and ofc having a ID helps with all the little tasks.

BUT you will be getting Georgia license soon so IDK why are you are asking about illinois. lol.