According to Bloomberg iOS 13 will include a dark mode to match the dark mode that was first introduced on macOS with macOS Mojave. It will allow for "easier nighttime viewing."
Improvements to the CarPlay interface are expected, and many iPad-specific upgrades are in the works. Apple will introduce a new home screen, an option to tab through multiple pages or a single app you can do in a web browser, and improvements to file management.
Previous rumors have suggested Apple will also introduce a multitasking feature for displaying two windows of the same app side by side, and Apple is expected to expand the availability of its cross-platform apps initiative to developers, making it easier to port apps created for iOS to macOS.
Rumored services that are in the works, including a magazine subscription service in Apple News and a television streaming service, will also come to iOS 1