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Apple issues second developer betas of iOS 10, macOS Sierra, watchOS 3 and tvOS 10

Apple on Tuesday pushed out the second pre-release beta builds for iOS 10, macOS Sierra, watchOS 3, and tvOS 10, arriving more than three weeks after the platforms were announced at the annual Worldwide Developers Conference.

All four updates are now available through Apple's developer portal, or through the software update setting on registered devices. As with all beta releases, Apple has advised that the updates should only be installed on devices that are dedicated to beta software development.

Apple has pledged that public betas of iOS 10 and macOS Sierra will arrive this month. No release date has been given, however.

All four platforms will be updated and released to the general public this fall, likely in late September when new iPhones are expected to launch.

macOS Sierra will bring a variety of enhancements, such as Siri support and optional cloud-based file management features. Some smaller features will include Auto Unlock for Apple Watch owners, and Web-based Apple Pay.

iOS 10 includes major notification improvements, third-party app support in Siri, and upgrades to apps like Messages, Maps, and Photos. watchOS 3 offers things like much faster loading times for apps, and iOS-style Control Center and multitasking functions. tvOS is gaining HomeKit control, a dark mode, and single sign-ons for cable subscriptions.