https://www.techradar.com/news/ios-12-what-we-want-to-see

The iOS 12 release date in 2018 shouldn't surprise you by now – Apple always launches its big iPhone and iPad update at the same time every year. 

Its new software features, however, are always filled with some unexpected and exciting news. We fully expect groundbreaking ideas, but also a healthy dose iOS 11 fixes given our many, many ongoing iOS 11 problems.