Apple today seeded build 13C44 of OS X 10.9.2 to developers, marking the third developer beta iteration of 10.9.2. The release comes a week after the second OS X 10.9.2 beta, build 13C39, and a month after the first OS X 10.9.2 beta.
The update is available to registered developers through the Software Update mechanism in the Mac App Store as well as through the Mac Dev Center.
Apple continues to ask developers to focus on mail, messages, graphics drivers, VoiceOver, VPN, and SMB2. The second beta of OS X 10.9.2 began allowing Mac users to block people on iMessage and FaceTime, as can be done in iOS 7.
Apple has also seeded new versions of Safari 7.0.2 for Mavericks and Safari 6.1.2 for Lion/Mountain Lion, asking developers to focus on General Website Compatibility, Accessibility, AutoFill features, Printing and Emailing from Reader, Dragging Tabs Between Monitors, and Extension Compatibility.