Two weeks after the previous build, Apple has made available a new, fifth beta of OS X 10.8.3 to developers through its Software Update channel. The latest build, 12D50, comes with no changes to the release notes from the previous 12D44 and lists no known issues, with the same request for testers to focus on AirPlay, AirPort, Safari, Graphics and Game Center. The lack of new information for the second beta running suggests that release may be imminent.
