官方更新說明：
en：Xcode 8 includes everything you need to create amazing apps for iPhone, iPad, Mac, Apple Watch, and Apple TV. This radically faster version of the IDE features new editor extensions that you can use to completely customize your coding experience. New runtime issues alert you to hidden bugs by pointing out memory leaks, and a new Memory Debugger dives deep into your object graph. Swift 3 includes more natural and consistent API naming, which you can experiment with in the new Swift Playgrounds app for iPad.
cn：Xcode 8包括所有你需要的東西,去創(chuàng)建令人驚嘆的iPhone,iPad,Mac,Apple Watch和Apple TV 應(yīng)用程序,這是一個非?？斓腎DE版本,你無需多少編碼經(jīng)驗就能完全使用。新的runtime issues能更好的提醒你隱藏的bug、指出內(nèi)存泄漏,和一個新的內(nèi)存調(diào)試器使你更深入到對象中。Swfit 3包括更自然的和一致的API命名,你可以iPad中嘗試新的Swift Playgrounds 應(yīng)用程序。
en:
Interface Builder — Accelerated
The Interface Builder design canvas has been thoroughly reengineered to make your work faster and provide greater control. See a live preview of exactly how your app will appear on any Apple device with full vibrancy. As you quickly switch between different devices to customize your UI for size classes, you will always see the same interface as your customers. Pan and zoom are incredibly fast, and you can even edit your interfaces when fully zoomed out for a bird's eye view of your storyboard.
cn:
界面編輯器 ?- 速度更快
Interface Builder 畫布已徹底重新設(shè)計,使你工作更效率，操作更給力。不管在什么蘋果設(shè)備上，視覺效果都不會差，適配更完美。當(dāng)為size classes自定義UI控件時,在不同的設(shè)備之間快速切換,你總會看到相同布局的界面。平移和縮放非常快,甚至你可以縮小storyboard鳥瞰圖時編輯你的界面。
en:
Editor Extensions
New Xcode extensions for the source editor let you customize your coding experience. Use extensions to navigate within your editor’s text, and select, modify, and transform your code. Bind your favorite extensions to a keyboard shortcut to make common reformatting tasks a snap. Xcode includes a new template so you can easily create editor extensions and distribute them on the Mac App Store, or sign your extensions with your Developer ID to share them online. And because extensions run in a separate process, Xcode stays safe and stable.
編輯器擴(kuò)展
新的Xcode擴(kuò)展能使你更輕松的適應(yīng)資源編輯器。使用擴(kuò)展編輯器的導(dǎo)航編輯的文本，選擇，修改和改變你的代碼。綁定快捷鍵到你最喜歡的擴(kuò)展，使普通重復(fù)化任務(wù)易如反掌。 Xcode中包括一個新的模板，以便您可以輕松創(chuàng)建編輯器的擴(kuò)展并且在Mac App Store分發(fā)它們，或與登錄您的開發(fā)者ID在線共享您的擴(kuò)展。由于擴(kuò)展在一個單獨的進(jìn)程中運行時，保持Xcode安全穩(wěn)定。
The new Xcode 8 editor also includes great new features built right in:
San Francisco Mono font with new themes（新主題新字體）
Auto-generate Quick Help documentation（快速生成幫助文檔）
Highlight the current line（編輯代碼時突出顯示當(dāng)前行，不怕自己眼花了）
Image and color literals in Swift code（SWift也支持圖片和顏色文本）
Code completion for images（圖像代碼完成）
