Get your hard drives ready, because Mountain Lion is on the verge of arrival. Apple released the golden master (GM) of Mountain Lion on Monday afternoon through its developer portal, signaling that the company is close to the final release of the next version of OS X. The GM is limited to registered developers until the final version is unleashed upon the Mac App Store later this month. Apple has not formally announced a release date for Mountain Lion just yet, but did say it would happen sometime this month when it previewed Mountain Lion at WWDC in June. Still, we have a couple of theories about when the release might hit the tubes. Read the full story at ARS Technica.