
Some icons have been changed to correspond with those of iOS 7 and iOS 8. Other changes include thinner fonts and blurred translucency effects. It is the first major redesign of the OS X user interface since 10.5 Leopard. Yosemite introduced a major overhaul of OS X's user interface, emphasizing flat graphic design over skeuomorphism, following the aesthetic introduced with iOS 7. These are the models that support new features such as Handoff, Instant Hotspot as well as AirDrop between Mac computers and iOS devices:


MacBook (Aluminum Late 2008 and Early 2009 or later).These are the models that are compatible with OS X Yosemite (with exceptions): As with Mavericks and Mountain Lion, 2 GB of RAM, 8 GB of available storage, and OS X 10.6.8 (Snow Leopard) or later are required. However, to take full advantage of the Handoff feature, additional minimum system requirements include a Mac with Bluetooth LE (Bluetooth 4.0).

