Mountain Lion: What you need to know
20.05.12
Not to worry: We’ve had a chance to spend some quality time with the next version of the Mac operating system , and we’re prepared to answer any questions you might have about its availability, new features, and enhancements to existing applications. And don’t worry if you’ve still got lingering questions—we have a few months before Mountain Lion arrives to sort everything out.
Availability
When will Mountain Lion be available?
Well, there’s a developer preview of Mountain Lion available now, so that software makers can update their apps to take advantage of OS X’s new features. As for end users like the rest of us, when it announced the developer preview via press release , Apple specifically said “late summer 2012.” That’s not a precise date, so Mountain Lion could leap into action any time before the Autumnal Equinox on September 22. For your historical reference, Lion arrived on July 20 last year, while Snow Leopard shipped on August 28, 2009 —both those OS X updates were given initial release dates of “summer” as well.
Source: Macworld