Apple’s annual iOS update strategy expected to continue uninterrupted with the debut of an iOS 13 beta at June’s Worldwide Developers Conference in San Jose, but a collection of the new features appear to have leaked months early.

According to developer Steve Troughton-Smith and 9to5Mac, iOS 13 will launch with a system-wide Dark Mode, revised system-wide Undo and Redo gestures, and significant improvements to Mail, Safari, and multitasking, amongst other improvements.

The most conspicuous addition will reportedly be Dark Mode, a feature that debuted in individual iOS apps before going system-wide in macOS Mojave, and now will work across all of iOS 13 as well.

As shown in the screenshot above, Dark Mode is a more sophisticated “invert screen” feature that turns otherwise bright white and light gray app UIs to black and dark gray while flipping font colors, and generally preserving other graphic elements.

Beyond its appeal in dark surroundings, the feature may conserve energy on iPhone OLED screens that use power only when illuminating individual pixels.

Apple also appears set to improve iOS’s system-wide Undo feature, which for years has awkwardly depended on device shaking.

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