Apple has released a developer preview of OS X Mavericks, the 10th major release of the Mac operating system. With more than 200 new features, OS X Mavericks brings Maps and iBooks to the Mac, introduces Finder Tags and Tabs, enhances multi-display support for power users, delivers new core technologies for breakthrough power efficiency and performance, and includes an all-new version of Safari. The preview release of OS X Mavericks is available to Mac Developer Program members starting Monday, and Mac users will be able to download Mavericks from the Mac App Store this fall.

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