updated 07:23 pm EST, Thu March 6, 2014
Graphics, audio requested as areas of focus in new build
Slightly less than two weeks after the public release of OS X 10.9.2, which brought FaceTime audio calling, Mail improvements and an important security fix to Mavericks, Apple is seeding the first beta of OS X 10.9.3, build 13D12, to developers. The brief release notes mention that developers are requested to focus on audio and graphic drivers in their testing. The previous update was released after approximately 14 weeks of testing across seven betas.
OS X 10.9.3 is likely to further focus on bug fixes rather than the raft of small but new features that accompanied 10.9.2. In addition to FaceTime audio calling, both Messages and FaceTime also gained contact blocking, and Apple issued updated Safari versions for Mavericks and Mountain Lion, AutoFill improvements, better VoiceOver navigation, and a change to the new default standard for network connections, SMB2 (replacing the venerable Apple File Protocol).
The beta is available to developers only through Apple's Mac developer portal. For iOS, rumors continue to state that iOS 7.1, another significant bug-fix upgrade, is waiting in the wings and expected to be released soon.