OS X Mountain Lion

OS X 10.8 "Mountain Lion" is a version of Mac OS X, released on July 25, 2012. It mostly adds new iCloud-based software, to replace the older Apple cloud software .me. There is also a new Notification Center, which displays messages from phone, and new notifications from online services.

Basic System Requirements for OS X Mountain Lion:

 * 64-Bit Intel Core 2 Duo processor or better required
 * Ability to boot into OS X 64-bit kernel
 * Advanced GPU chipset required
 * Internet connection required to download and install OS X 10.8

Macs that support OS X 10.8 Mountain Lion

 * MacBook Pro – 13″ from mid 2009 or later, 15″ from late 2007 and newer, 17″ from late 2007 and newer
 * MacBook Air – late 2008 and newer
 * iMac – models from mid 2007 and newer
 * MacBook – 13″ aluminum from 2008, 13″ from 2009 and newer
 * Mac Mini – early 2009 and newer
 * Mac Pro – early 2008 models and newer
 * XServe – early 2009 models and newer

Macs that do NOT support OS X Mountain Lion

 * Anything with an Intel GMA 950 or x3100 integrated graphics card
 * Anything with an ATI Radeon X1600
 * MacBook models released prior to 2008
 * Mac Mini released prior to 2007
 * iMac models released prior to 2007
 * Original MacBook Air

Release history
''Note: Combo updates include all previous releases (ex: 10.8 to 10.8.3). Individual update is a smaller package size and can be used if currently using the previous release (ex: 10.8.2 to 10.8.3).''