Apple promised that you will offer to Mac application developers the new OS X Mountain Lion and this is happening now. In the portal dedicated to developers on the Apple website, the company has published the new OS X Mountain Lion and any developer can download it for free. Both Mountain Lion and Mountain Lion Server are available for download through the Mac App Store and if you are a developer you can get both for free, but considering that they are beta versions of the operating system, they can cause problems.
