The 2018 iPhones are already getting approved by regulators, indicating launch is imminent
In any case, the fact that these new iPhone model numbers are wiggling their way through the regulatory system means that the launch is imminent. Apple isn't too careful with leaks, either, as suggested press renders leaked not long ago, both of the new OLED iPhones, and of the Apple Watch.
The LCD puppy, however, is still to face the audience in a credible manner, so we'll probably have to wait until next week to see it in the flesh. Meanwhile, feast on some A1920 here, and play some guessing games which one of the three new iPhone this may be.