I'm not sure what is taking Apple so long to incorporate this. It seems like there's a lot of demand for it. I would love to see a dark mode implemented into the core of iOS 11. With an option to enable/disable it and also to have it automatically switch depending on the day, just like on tvOS 11. Dark mode just looks so much sleeker and gorgeous, especially on a black iPhone. One app that I use that shows off a good example of this is Discord. It looks beautiful on my screen. I hope we won't have to wait for iOS 12 to see this. It's already in tvOS 11, and watchOS pretty much has it as well.