Pace of OS X 10.8.3 Developer Builds Increasing with Build 12D54

Apple on Wednesday released to developers the seventh prerelease build of OS X 10.8.3. The build, 12D54, is the latest in a line of updates that Apple has been testing since November.

OS X 10.8.3 12D54

Today’s release comes just over a week after the previous update, and signals that Apple is getting close to a public release. There are no known issues identified, and developers are asked to focus on AirPlay, AirPort (Wi-Fi), Game Center, Graphics Drivers, and Safari.

Although developers can still obtain prerelease builds of OS X from Apple’s Developer Center, the company is now also allowing registered developers to download beta updates via the Mac App Store’s Software Update, simplifying and easing the installation of what can be frequent updates.

OS X 10.8 Mountain Lion (Build 12A269) was released July 25, 2012. The first maintenance update, 10.8.1, arrived about a month later on August 23, 2012 (12B19), and the most current version, 10.8.2 (12C54), was first available on September 19, 2012. Version 10.8.2 has since seen several supplemental updates for various issues and for specific hardware, such as the new Mac minis, resulting in the use of multiple public build numbers.