Apple Releases Seventh OS X Mavericks 10.9.3 Beta to Developers
Apple has released a new OS X Mavericks 10.9.3 beta to developers for testing. This is the seventh beta and it can boast of a number of stability improvements and bug fixes. Just like the previous beta.
Today's beta version has a build number 13D43. Apple has once again asked the developers to focus on Graphics Drivers, Audio, Safari browser, Mail, Contacts and Calendar sync over USB in iTunes. This indicates that the latest OS X beta contains no new features. I honestly hope that Apple engineers will add something new to the next Mavericks version.
Those who have a developer account can download the latest OS X beta from Apple's developer portal. However, since it is still only a beta version, I don't recommend you to upgrade if you're not a developer.