Earlier today, Apple released a new beta for OS X 10.9.3 to developers. This new beta comes more than 2 weeks after the release of the 2nd beta and 3 weeks after the first one.
In the first OS X 10.9.3 beta, Apple added the ability to run 4K displays with a new native resolution at 60Hz. The second beta didn’t bring any major changes and this new one doesn’t bring anything new either.
The third beta focuses on areas such as Graphics Drivers, Audio, Safari, Contacts & Calendar sync over USB in iTunes, and Mail. This could mean that a public release is going to happen very soon. Maybe Apple is readying a 4K iMac display to go along with the new features in 10.9.3? We’ll know soon.
If you’re a registered Mac Developer, you can download the latest beta with build number 13D28 from the Mac App Store Update section or the Apple Developer website. Let us know if you find any new updates/changes in the latest beta.