Stuff like this is the double edge sword of Apple secrecy. Granted I haven't ever worked with Mac development specifically, but the notch will rumored wasn't a sure thing. How would developers know that they needed to update their apps for the notch without having access to test this ahead of time? Sure there is that window of announcement to hardware release, but are you just going to guess at where the notch is? Was Xcode updated immediately to allow work to begin on updates asap? Even if it was, it still isn't a lot of time in the grand scheme of things to update and test an entire applications UI changes before units shipped.