Apple Seeds OS X Mountain Lion 10.8.5 Build 12F20 to Developers
Apple has seeded OS X Mountain Lion 10.8.5 build 12F20 to registered developers for testing. The new build comes just a week after Apple seeded the pervious 12F17 build.
The new build is number 12F20 and has no known issues. Focus areas in included Wi-Fi, Graphics, Wake from Sleep, PDF viewing and Accessibility, and Mobile Device Management.
Developers can grab the update at the link below or update via Software Update.