Anyone that purchased a 2015 +Hyundai Worldwide Sonata with the navigation head unit can bring it their local dealer for a free software update that will enable +Android Auto support. For now there is no news about Apple CarPlay support although since the Google I/O developer conference is also happening this week, I'd guess that we'll hear something the week of June 8 when Apple holds it's Worldwide Developer Conference.
I got demos of both systems back in January https://sam.abuelsamid.com/2015/01/19/trying-out-android-auto-and-apple-carplay-with-hyundai/