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A week following the previous build, Apple has released build 12E52 of the OS X Mountain Lion 10.8.4 beta to developers. Apple, once again, asks developers to focus on WiFi, Graphics Drivers, and Safari.

We previously noted that 10.8.4 includes support for Mac computers with 802.11ac WiFi chips.

While 10.8.4 is a minor update to OS X Mountain Lion, Apple also has a major release launching in the next couple of months. We previously reported that OS X 10.9 will include an enhanced Finder, much improved multiple-monitor support, a new version of Safari, and various other features from iOS.

Thanks, D!

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