People familiar with the development of iOS shared details with 9to5Mac about the main features of iOS 13, seemingly confirming that a system-wide Dark Mode is finally coming to iPhone and iPad, as is a brand new volume HUD to replace the one that has been annoying iOS users for years. On iPad, you may be able to run the same app in multiple windows.
Each window will also be able to contain sheets that are initially attached to a portion of the screen, but can be detached with a drag gesture, becoming a card that can be moved around freely, similar to what an open-source project called "PanelKit" could do.
The clunky iOS undo function, which until now has involved shaking the device, may be usurped by a gesture.
A more intriguing feature is a new gesture Apple could add - now gestures can bring up various menus or toolbars, but the report suggests an "undo" gesture is coming too, which would let you go back similar to how the "back" button on Android works.
Apparently this gestures requires a three-finger tap which you must slide to the side to undo or redo an action - this sounds a little complicated, so we'll have to wait and see if the report is accurate.
Safari on iOS 13 for iPad will automatically ask for the desktop version of a site instead of the mobile version as well, including YouTube and others.
Multi-select gesture. A new system-wide gesture will let users multi-select items in table and collection views. The Mail app is "getting smarter for the first time in a while" too, the report notes.
Other updates may include better font management, improved language support, an overhauled Reminders app, a new look for the volume user interface, more expansive printing controls in apps and perhaps better filters to avoid accidental "Hey Siri" activations (from things like laughing).
Mail improvements. In iOS 13, the Mail app is being updated with category (marketing, purchases, travel, "not important" and more) filtering and a new Read Later queue.