Hyundai and sister brand Genesis plan to launch a lot of new EVs by 2030, according to this article: https://www.thetorquereport.com/news/hyundai-to-launch-11-new-evs-by-2030-genesis-to-get-6-evs/ The next vehicles in the Ioniq range are likely larger, given the Ioniq 6 and Ioniq 7 model designations. So what does that mean for the Kona? Hyundai has been vague about plans for the Kona Electric replacement. It seems unlikely we'll see a smaller Ioniq "4" that's sized like a Kona and smaller than the Ioniq 5. I saw my first Ioniq 5 today and it looked BIG.
I believe the 2022 Kona EV is the last one. Ioniq platform will be the future of Hyundai EVs for the foreseeable future.