From today, the developers for the Mac platform were able to download the Mac App Store applications for the operating system OS X Yosemite. This is stated in the e-mail list Apple. 
Desktop platform OS X 10.10 Yosemite is in the final stages of development. It is expected that Apple will announce the timing of the release of the public version of the operating system at a special event in October.
"Make sure that your applications use the full potential of the most advanced in the world operating system OS X Yosemite, which will be publicly available this fall.Download OS X Yosemite GM and Xcode 6.1 GM of the Mac Dev Center. Use these tools to create their applications, and then test and submit them to the Mac App Store ».
On Tuesday, Apple released a version of OS X Yosemite GM Candidate for software developers. In fact, such a release is the last stage of development before the release of the new Yosemite desktop OS.
It is possible that the release will coincide with the publication of Yosemite financial report Apple earnings on 20 October. OS X Lion and Mountain Lion on the market within the next day after the announcement of the financial results of the company in July 2011 and July 2012, respectively.