Samsung's Galaxy S7 charges pretty quickly using wireless charging so the tech is there, the only way Apple would have wireless charging on the iPhone is if they went back to using a glass back, if the iPhone 8 has a glass back then it's more likely may have wireless charging to.
I've always been abit suspicious about quick charging myself, my Nexus 6P had it & if i ran the battery right down it would get quite warm when charging from 20% to 100%, and before i sold it the battery within a year degraded quite alot, don't know if this was down to quick charging or Google & Huawei cheaping out on the battery.
I do personally think quick charging could have an impact on the battery than what standard changing would do, this maybe the reason Apple still hasn't used it in any iPhone's to date even though quick charging been around for a few years now.