My current app inside the App Store has an black theme option which makes the background black. On iPhone X it will hide the notch.
I am currently updating it for iOS 11, but I was thinking that Apple does not want you to hide the notch.
Does anyone know if my update would get rejected because of this? The black theme is just a secondary option, not the main one.
As long as there aren't obvious way in which the notch is obfuscated, it should be fine. You may want to go with something a bit brighter than pure black so the user can tell where the notch starts and ends; so as to ensure they have no problem with the gestures. Otherwise should be no problem.
Cheers!