Every year at WWDC, Apple showcases their latest products, the 11th version of OS X was finally unveiled at WWDC 2014, it is named Mac OS Yosemite. It will be officially available to consumers free of charge on an unspecified date this fall. If you want to install Mac OS X Yosemite right now on your machine follow this process.
Open a Mac developer account instantly you’ll access to a Yosemite download link. Or apply for a open beta program which is available later this summer. It is fun and good to test out a program before the actual launch. OS X Yosemite beta 1 or developer preview 1 is a 4.7GB download, and will work on any Macs that can run OS X Mountain Lion or OS X Mavericks.