https://www.techradar.com/news/what-weve-learned-about-iphone-11-from-ios-13

Apple unveiled iOS 13 - its next big software update to hit iPhones later in 2019 - at its WWDC 2019 keynote, and while we know it will come to current iPhones, we also expect it to feature on the iPhone 11.

While Apple hasn't confirmed any details about the next iPhone - not even its existence - the Cupertino, California based firm tends to run its launches like clockwork, so we fully expect to see the iPhone 11 series launch in September.