OS X Mavericks (Desktop, MacBook)

Apple has seeded OS X 10.9.3 build 13D45a to developers on Monday, following the release of build 13D43 last week.

Apple didn’t detail features of the new build, but once again asks developers to focus on Graphics Drivers, Audio, Mail, Contacts and Calendar sync over USB in iTunes, and Safari.

We’ve seen a number of enhancements in 10.9.3 thus far, including the addition of a new native ‘Retina’ resolution option for 4K displays and the restoration of the ability to sync contacts and calendar info.

Developers registered with Apple’s Mac developer program can download the update through the Mac App Store’s Software Update feature or through the Mac Developer Center website.

We’ll let you know if there any new features worth noting.