Apple continued to extensively test the next maintenance update to OS X 10.8 Mountain Lion with the release of the tenth prerelease build of 10.8.3 to developers Wednesday. The build, 12D65, arrives one week after the previous build, 12D61.
The latest build of 10.8.3 lists no known issues and asks developers to focus on AirPlay, Airport, Game Center, Graphics Drivers, and Safari.
Notably, the build fixes the file bug revealed over the weekend that caused nearly every Mountain Lion app to crash by entering a specific set of characters. It was eventually determined that the bug was due to a Cocoa programming error in Mountain Lion’s data detectors. That Apple has now fixed the bug in the latest prerelease of 10.8.3 is a good sign, as it was potentially a serious security vulnerability.
OS X 10.8 Mountain Lion was first released on July 25, 2012. The 10.8.1 update arrived on August 23, 2012 and 10.8.2 on September 19, 2012. Prerelease builds of 10.8.3 have been seeded by Apple since November.