Apple has released the first public betas of iOS 10 and macOS Sierra, allowing anyone to try the operating systems before their full release later in the year.
Apple made the first public betas available on Thursday via its website, and you'll need to be signed up to the beta-testing programme in order to get the updates.
The firm has warned that these are early releases that may have some lingering bugs and technical glitches, and probably shouldn't be downloaded onto a main device or computer just yet.
Apple reminded testers that if they do encounter problems they should be reported via the Feedback Assistant app.
iOS 10 and macOS Sierra were revealed during Apple's WWDC press conference last month, and were available only to developers until now.
Apple's updated iOS release brings major updates to Siri, a huge overhaul to Apple's Messages app, 3D Touch and widgets on the lock screen, and the ability finally to remove stock apps.
iOS 10 will work with all iPad Air and iPad Pro models, the fourth-generation iPad, the iPad mini 2 and later, and the sixth-generation iPod Touch. A full release of the operating system is likely to arrive alongside the iPhone 7 later this year.
macOS Sierra is the first version of Apple's desktop operating system to include Siri and Apple Pay, which is supported in Safari in Sierra using authentication via a nearby iPhone or Apple Watch.
Those with access to the developer beta of watchOS 3 can also use an Apple smartwatch to unlock a MacBook once macOS Sierra is installed.
Other new features in Sierra include Universal Clipboard functionality, iCloud Drive improvements, new Messages features and a reworked Apple Music service.
Apple has yet to announce a full release date, but has said that macOS Sierra will be made available sometime in the autumn.
Running it requires a MacBook (late 2009 and later), iMac (late 2009 and later), MacBook Air (2010 and later), MacBook Pro (2010 and later), Mac Mini (2010 and later) or Mac Pro (2010 and later).
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