Apple seeds OS X Mavericks Developer Preview 3

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To go along with this morning’s third iOS 7 beta, Apple has released OS X Mavericks Developer Preview 3. This new preview arrives two weeks following Preview 2. Like Preview 2, it seems likely that Preview 3 focuses on bug and performance fixes.

OS X Mavericks launches for the general public this fall with new Maps and iBooks apps, significant battery life, scrolling, and overall performance adjustments, and power-user features like revamped multiple-monitor support, Finder Tags, Finder Tabs, and a faster Safari browser.

As readers discover changes in the new Mavericks preview, we will note them below. If you find anything new, you can reach us at tips@9to5mac.com.

The update comes in at 1.08 GB.

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Apple to release OS X 10.9 with new power-user features, more from iOS later this year

OS X 10.9, which is internally codenamed “Cabernet,” will focus on various “power-user” enhancements and take core features from iOS, according to our sources. Unlike operating system updates such as OS X Leopard and OS X Lion, OS X 10.9 will likely not be an overhauled approach to how the operating system feels and functions.

The new operating system includes major enhancements to the Finder application such as tags and tabbed browsing modes. Those additions are notable as many pro-users have relied on third-party solutions and hacks to enable these features. Additionally, the new operating system will include a new Safari web browser with a redesigned backend for improved page loading, speed, and efficiency…

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