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Apple seeds fourth beta of OS X 10.8.5 Mountain Lion
By Katie Marsal
Wednesday, July 10, 2013, 01:18 pm PT (04:18 pm ET)

People familiar with the software said the latest build is identified as 12F20. It has no known issues.
Developers have once again been asked to focus their testing on graphics, PDF viewing, Wi-Fi, and wake from sleep functionality.
So far, beta releases for OS X 10.8.5 have arrived on a weekly schedule, with the first beta being issued to developers on June 19.
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