OS X Yosemite has been released by Apple [Links]. All who want download this new OS X 10.10 with new design, features and specs can do it now. If you don’t have developer account – you can install OS X Yosemite on your Mac!!! I’ve worked on new OS X Yosemite since WWDC 2014. I think – it’s best desktop OS for yours Macs. Light design, new features. All for yours Mac.
You can see complete list OS X Yosemite supported Macs here: