The latest update to macOS High Sierra is now available for all customers. The new build ships with version 17D47 or 17D2047 depending on your machine. The new version is available on Apple’s developer center and is rolling out to all users now. Release notes for the new software update specifically call out a fix for Messages: The macOS High Sierra 10.13.3 update improves the security and stability of your Mac, and is recommended for all users. This update addresses an issue that could cause Messages conversations to temporarily be listed out of order.

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Sep 25, 2017 - 7 things to know before upgrading to MacOS High Sierra 10.13. Performance is virtually identical, at least on an up-to-date MacBook Pro.

The update comes in at a relatively small 1.97GB (on my iMac). Developers and public beta testers should not need to update from the last beta version.

In addition to the release notes, Apple has published these details about the security changes.

General Requirements • OS X 10.8 or later • 2GB of memory • 14.3GB of available storage to perform upgrade* • Some features require an Apple ID; terms apply. • Some features require a compatible Internet service provider; fees may apply. Mac Hardware Requirements For details about your Mac model, click the Apple icon at the top left of your screen, choose About This Mac. These Mac models are compatible with macOS High Sierra: • MacBook (Late 2009 or newer) • MacBook Pro (Mid 2010 or newer) • MacBook Air (Late 2010 or newer) • Mac mini (Mid 2010 or newer) • iMac (Late 2009 or newer) • Mac Pro (Mid 2010 or newer) Feature Requirements Siri Requires a broadband Internet connection and microphone (built-in or external). Dictation Requires a microphone (built in or external).

Spotlight Suggestions Requires a broadband Internet connection. Gestures Requires a Multi-Touch trackpad, Force Touch trackpad, Magic Trackpad, or Magic Mouse. Force Touch gestures require a Force Touch trackpad. VoiceOver gestures require a Multi-Touch trackpad, Force Touch trackpad, or Magic Trackpad. Photo Booth Requires a FaceTime or iSight camera (built in or external), or USB video class (UVC) camera. FaceTime Video calls require a built-in FaceTime camera, an iSight camera (built in or external), or a USB video class (UVC) camera; and broadband Internet connection. Handoff, Instant Hotspot, and Universal Clipboard Supported by the following Mac models: • MacBook (Early 2015 or newer) • MacBook Pro (2012 or newer) • MacBook Air (2012 or newer) • Mac mini (2012 or newer) • iMac (2012 or newer) • Mac Pro (Late 2013) Handoff requires an iPhone, iPad, or iPod touch with a Lightning connector and iOS 8 or later.

Instant Hotspot requires an iPhone or iPad with cellular connectivity with a Lightning connector and iOS 8.1 or later. Requires Personal Hotspot service through your carrier. Auto Unlock Supported by Mac models introduced in mid 2013 or later. Requires an Apple Watch with watchOS 3 or later and an iPhone 5 or later. Apple Pay on the Web Supported by the following Mac models: • MacBook (Early 2015 or newer) • MacBook Pro (2012 or newer) • MacBook Air (2012 or newer) • Mac mini (2012 or newer) • iMac (2012 or newer) • Mac Pro (Late 2013) Requires MacBook Pro with Touch Bar, iPhone 6 or later with iOS 10 or later, or an Apple Watch with watchOS 3 or later.

Phone Calling Requires an iPhone with iOS 8 or later and an activated carrier plan. Buy windows 10 for mac. SMS Requires an iPhone with iOS 8.1 or later and an activated carrier plan. AirDrop AirDrop between Mac computers and iOS devices is supported by the following Mac models: • MacBook (Early 2015 or newer) • MacBook Pro (2012 or newer) • MacBook Air (2012 or newer) • Mac mini (2012 or newer) • iMac (2012 or newer) • Mac Pro (Late 2013) AirDrop to iOS devices requires an iPhone, iPad, or iPod touch with a Lightning connector and iOS 7 or later. AirDrop between two Mac computers is supported by the following Mac models: • MacBook (Early 2015 or newer) • MacBook (Late 2008 Aluminum or newer) • MacBook Pro (Late 2008 or newer) • MacBook Air (Late 2010 or newer) • Mac mini (Mid 2010 or newer) • iMac (Early 2009 or newer) • Mac Pro (Early 2009 with AirPort Extreme card, or Mid 2010 or newer) AirPlay AirPlay Mirroring requires an Apple TV (2nd generation or later).