Mountain Lion is available through the Mac App Store for $19.99. It includes a slew of new features and refinements, such as:
▪ Notification Center: An intuitive, non-intrusive method for your Mac to notify you of new email messages, calendar appointments software updates, and more. For those of you using iPhones and iPads, this will feel very familiar.
▪ Messages: The iMessage feature that debuted with iOS 5 iPhones and iPads is now available in Mountain Lion. This application allows you to keep in touch with people using iPhones, iPads, and other Macs with Mountain Lion.
▪ AirPlay Mirroring: If you have an AppleTV and and iPhone 4S, iPad 2, or new iPad, you’ve been able to push your devices display to an AppleTV for some time. With Mountain Lion, now you can do the same with your Mac. This feature is only supported on the following Macs:
▪iMac (Mid 2011 or newer)
▪Mac mini (Mid 2011 or newer)
▪MacBook Air (Mid 2011 or newer)
▪MacBook Pro (Early 2011 or newer)
Mountain Lion has some steep system requirements, it is not compatible with all Macs. Only the following Macs are supported:
▪ iMac (Mid 2007 or newer)
▪ MacBook (Late 2008 Aluminum, or Early 2009 or newere)
▪ 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)
▪ Xserve (Early 2009)
Mountain Lion offically requires a minimum of 2GB of RAM, but we recommend at LEAST 4GB of RAM for optimal performance. To upgrade to Mountain Lion, you’ll need to have Snow Leopard (Mac OS X 10.6) or Lion (Mac OS X 10.7) already installed. If your Mac is compatible with Mountain Lion, but you’re running Leopard (Mac OS X 10.5), you’ll need to purchase Snow Leopard in addition to the Mountain Lion upgrade.
Many applications are either unsupported in Mountain Lion or will need to be patched for compatibility with Mountain Lion. If you rely on your Mac as a productivity tool, we recommend waiting until key applications are updated and tested before upgrading. A way to find out of your applications will work is by checking out www.roaringapps.com. They have an extensive list of apps for Lion and Mountain Lion!