Apple today seeded the first test build of OS X 10.9.2 to registered Mac developers, just three days after the public release of OS X 10.9.1. The build, termed 13C32, is available to registered developers through the Software Update mechanism in the Mac App Store as well as through the Mac Dev Center.
There is no word yet on specific fixes and changes included in the update, and a public release target remains unknown.
Update: OS X 10.9.2 adds FaceTime Audio to the Mac for the first time. FaceTime Audio was originally introduced to the iPhone in iOS 7.
Article Link: Apple Seeds First OS X 10.9.2 Build to Developers [Update: Includes FaceTime Audio]