I'm a gadget guy, and I like to live on the edge. Therefore, I installed iOS 12 on my iPhone as soon as it became available (iOS is the software that powers your iPhone).
After reading a few reviews, I was expecting to be impressed. Or at least to notice... something. I do like the grouped notifications... kind of. But that's really the only thing I've noticed (but I did create a a "Memoji" because of course I did).
I will say that iOS 12 makes me glad that I don't have to spend my time writing about iOS 12.