Well today Apple has just seeded a new build of OS X 10.8.4. This new update marks the eighth beta of the firmware, and comes just 9 days after the previous release. As before, As before Apple is asking developers to focus on specific areas of the OS, namely Wi-Fi, Graphics Drivers and Safari…
If you are a developer you can go and download this new build from Apple’s developers portal.
Click on this link : http://j.gs/2Cxi for getting the beta version from Apple developers site.