So I've done some research about that, called my dealership, confirmed it by checking manuals for all the head units available, and the situation is absolutely ridiculous.
i30 N Performance will NOT have wireless Android Auto, because it ships with the 10,25" navigation head unit as standard equipment. The non-Performance trim might get the wireless Android Auto, because it ships with the 8" radio. Yes. You pay more for WORSE equipment! Unless you care for the built-in nav, which - as far as I know - nobody in the world does.
My dealership claims that the 10,25" version has no wireless AA/CP because "the built-in navigation uses a built-in SIM card, so it's online, so I don't need Android Auto after all!", but it sounds like the license issue might be true after all and there's some conflict regarding the Hyundai navigation being always default. What I have confirmed as well is that the 10,25" head unit has both Bluetooth and Wi-Fi connectivity, so technically there is nothing stopping Hyundai from enabling wireless connectivity with later updates.
I am also looking into sideloading it on the head unit - if you can do it with crap Chinese Android head units, you should probably be able to do the same here as long as sideloading anything will be possible.
All in all, after first learning about no active cruise control and now this, I am pretty pissed and I'm currently re-checking the equipment list to see if nothing else I expected will be missing.