I think there must have always been some way to do AR (Pokemon GO and other games) but I believe it always required a team to accomplish this and possibly work with engineers at Apple.
As an independent developer, I hope the AR kit will make it much easier for me to create something fun and possibly integrate with Siri and other kits. This is what I'm hoping for :D
I know VR is hot right now, but I've always had the thought AR > VR.