Apple OS X 10.9 Mavericks is finally available for Download. Surprisingly unlike previous paid upgrades is absolutely free to upgrade this time. This is the tenth major release of Apple OS X.
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),