FWIW, we had our first service on our GD-01 (bought the car secondhand) last December, which was the last service within warranty. They updated the maps to the latest at the time (which I believe was 2017 maps, so a year behind). So you definitely should have had maps updated in that time!
Will be interested to see if they give us the update for free when we put it in for service this December (first out of warranty). Might take the car elsewhere if Hyundai doesn't want to chuck it in for free!
(I mean, they just need to plug in a USB stick right?)