When people think of Mac OS, they think of names like OS X Yosemite or Mavericks. OS X Yosemite has been released by Apple. Together with the new OS X 10.10 Yosemite users see a completely updated design of the operating system for the Mac. The first beta version of OS X Yosemite is more similar to iOS 7 and iOS 8 in many aspects, but today Apple released the first promotional video of the new operating system. In the first video, dedicated OS X Yosemite, demonstrated the key changes in the interface. Despite not being too dramatic differences, many users and professional designers speak negatively about the design of OS X Yosemite.
You can install it for free on your supported Macs. If you have compatible mac for install last OS X, you can found download links here.