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Alongside beta 3 of iOS 8, Apple has released the third preview of OS X 10.10 Yosemite to developers. The update is available in the Mac App Store and under Software Update. We’ll be updating this post with new discoveries. You can let us know what you find at

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– New QuickTime icon

– Bookmark folders are now accessible via the address bar in Safari.

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– Dark Mode has also been enabled.

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– Interface tweaks in System Preferences wallpaper chooser.

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– Larger badges on App Icons for Notifications and improved font in Notification Center and in Safari Favorites Bar.

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– Redesigned icons in Mail.

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– UI Tweaks in iCloud preferences.

– FaceTime Audio and Video are separated:

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Updated Time Machine UI:

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