Apple OS X 10.9 Mavericks is finally out now, and surprisingly unlike previous paid upgrades is absolutely free to upgrade this time. The tenth major release of Apple OS X, the desktop and server operating system for Mac computers is now available as a free update through the Mac App Store. Compatible with iMac (Mid 2007 or newer), MacBook (Late 2008 Aluminium, or Early 2009 or newer), MacBook Pro (Mid/Late 2007 or newer), MacBook Air (Late 2008 or newer), Mac mini (Early 2009 or newer), Mac Pro (Early 2008 or newer) and Xserve (Early 2009) the release brings 200+ new features to users. OS X Mavericks brings Maps and iBooks to the Mac, introduces Finder Tabs and Tags, enhances multidisplay support, and includes an all-new version of Safari. The latest release of the world’s most advanced desktop operating system also adds new core technologies that deliver breakthrough power efficiency and responsiveness. While the most recommended and easy method to download and install the new OS is via Apple Mac Appstore, for user's have limited/unreliable internet connectivity unofficial direct download of "Apple OS X 10.9" are posted at the end of this post.