Yesterday, “Apple provided developers with the first beta for the upcoming release of OS X Mavericks version 10.9.3,” Mark Gurman reports for 9to5Mac.
“Apple did not disclose any new features coming in 10.9.3, but we have discovered that the update includes notable enhancements for users with Macs connected to 4K-resolution monitors,” Gurman reports. “With 10.9.3, Mac users can now natively set their 4K monitors to run the Mac operating system at a pixel-doubled ‘Retina’ resolution.”
“Before this update, users with Macs connected to a 4K display would simply experience their content on a larger scale with window elements spread out,” Gurman reports. “Macs on 4K displays essentially were given ~4000 lines of room to accomplish their tasks… In addition to the changes for running Macs pixel-doubled on 4K screens, multiple users are reporting that 10.9.3 has unlocked the late-2013 Retina MacBook Pro to be capable of driving 4K Macs with a refresh rate of 60Hz.”
Read more, and see the screenshots, in the full article here.