I'm UK based and my info is from Kia Customer services. The sat nav upgrade is free but there's a £25 labour charge for installing. The Niro was advertised with CarPlay so I feel it should be a free update!
Me too it should be free, I picked my first edition up last week, I contacted the dealer where I purchased the car from,they confirmed the £25, but said no charge as I brought it from them
This of course is in Holland but I called my dealer two days ago and he said it would be just a few more days until the upgrade was available. Will let you know, for what it's worth, when they call me, as they promised.
Meanwhile, I'm able to use my iPhone as a "personal Hot Spot" which helps keep the Nav System current as to road closures and traffic situations.