Big scoop over on 9to5mac about the next version of iOS. Apple are finally adding a system wide Dark Mode!
First, the long-awaited Dark Mode is finally coming to the iPhone and iPad with iOS 13. There will be a system-wide Dark Mode that can be enabled in Settings, including a high contrast version, similar to what’s already available on macOS. Speaking of macOS, iPad apps that run on the Mac using Marzipan will finally take advantage of the Dark Mode support on both systems.