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OS X Mavericks 10.9.3 Beta Contains Native 'Retina' Resolution Option for 4K Displays

Just released earlier tonight (http://www.macrumors.com/2014/03/06/apple-seeds-first-os-x-10-9-3-build-to-developers/), Apple's OS X Mavericks 10.9.3 beta appears to have built-in support that enables all compatible 4K displays to be set at a "Retina" resolution, with an option for 60Hz output. The compatibility was first discovered by Twitter user @KhaosT (https://twitter.com/KhaosT/status/441761032436846593), and was tested with both the Late 2013 Retina MacBook Pro and redesigned Mac Pro in conjunction with Dell's UltraSharp 24 Ultra HD Monitor (http://www.macrumors.com/2013/12/02/24-inch-4k-display-from-dell-priced-at-1399-28-inch-4k-model-coming-at-under-1000/).
 
 (http://cdn.macrumors.com/article-new/2014/03/osx_1093_4k_support-800x493.jpg)
 To this point, OS X compatibility with 4K displays has been known to be somewhat erratic (http://www.macrumors.com/2013/12/31/mac-proos-x-4k-display-compatibility-like-the-wild-west-some-4k-monitors-unsupported/), as AnandTech revealed in December that Sharp's 32'' 4K display (http://www.macrumors.com/2013/12/06/apple-offering-32-inch-4k-sharp-displays-in-european-online-apple-stores/) supported only one scaled resolution at 2560 x 1440. Furthermore, it was discovered that Apple had chosen to render text, menu and UI elements in the same manner as the Retina MacBook Pro, resulting in small and difficult to read on-screen elements on a 4K display. Various other 4K monitors were also found to be not properly supported.
 
 Native support for 4K displays could also indicate that Apple is gearing up to release a higher-resolution Thunderbolt Display (http://www.macrumors.com/roundup/displays/), as Apple last refreshed (http://www.macrumors.com/2011/07/20/apple-releases-new-sandy-bridge-mac-minis-and-thunderbolt-display/) the monitor over two years ago. A number of other companies also introduced (http://www.macrumors.com/2014/01/07/affordable-4k-displays/) more affordable 4K displays at CES 2014 in January, with options from the likes of Lenovo (http://www.anandtech.com/show/7635/lenovo-at-ces-2014-thinkvision-pro2830m-28-inch-4k-professional-display), Asus (http://www.engadget.com/2014/01/06/asus-28-inch-4k-display/), Seiki (http://www.seiki.com/), and LG (http://www.engadget.com/2013/12/17/lg-4k-ultra-widescreen-monitors/) expected to hit the market throughout this year.
 
 
 
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Source: OS X Mavericks 10.9.3 Beta Contains Native 'Retina' Resolution Option for 4K Displays (http://www.macrumors.com/2014/03/07/os-x-10-9-3-retina-option-4k-displays/)