OS X Yosemite

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OS X v10.10 Yosemite
Release of OS X operating system
OS X Yosemite Desktop.png
The default desktop of OS X Yosemite Preview
Company / developer Apple Inc.
Source model Closed source (with open source components)
Latest preview

10.10 DP6 (Build 14A329f)[1]

10.10 Public Beta 1 (Build 14A299i)[2] / July 22, 2014[3]
Update method Mac App Store
Platforms x86-64
Kernel type Hybrid
License APSL and Apple EULA
Preceded by OS X v10.9 Mavericks
Official website Official website

OS X Yosemite (/jˈsɛmɨt/ yoh-SEM-it-ee) (version 10.10) is the upcoming eleventh major release of OS X, Apple Inc.'s desktop and server operating system for Macintosh computers. OS X Yosemite was announced and released to developers on June 2, 2014, at WWDC 2014 and it was released to public beta testers (the first one million people to sign up for the public beta) on July 24, 2014. Yosemite is scheduled for final release to consumers in late 2014.[4][5] Following the new landmark-based naming scheme introduced with OS X Mavericks, Yosemite is named after the national park in California.



Yosemite introduced a major revision to the operating system's user interface, designed with inspiration from iOS 7, while still maintaining the OS X look and feel. The interface incorporates a flatter visual appearance with blurred translucency effects.

Other notable design changes include new icons, light and dark color schemes, and the replacement of Lucida Grande with Helvetica Neue as the default system font.[6][7][8] The dock is now a 2D translucent rectangle instead of a skeuomorphic glass shelf, reminiscent of the dock design used in early versions of OS X.


Many of Yosemite's new features focus on the theme of "continuity", increasing its integration with other Apple services and platforms such as iOS and iCloud. The Handoff functionality allows the operating system to integrate with iOS 8 devices over Bluetooth LE and Wi-Fi; users can place and answer phone calls to and from an iPhone using their Mac as a speakerphone, send and receive text messages, activate personal hotspots, or load items being worked on in a mobile app (such as Mail drafts or Numbers spreadsheets) directly into their desktop equivalent.[9]

Notification Center[edit]

Notification Center features a new "Today" view, similar to that in iOS. The Today view can display information and updates from various sources, along with widgets.[6][7] The widgets in the Today view are similar to those of iOS 8.


Spotlight is more tightly integrated with the operating system; it now displays its search box in the center of the screen and can include results from online sources, including Bing, Maps, and Wikipedia.[6] Stock applications such as Safari and Mail have been updated.[10]

The green "zoom" button on windows now has a different function. Instead of simply enlarging the window, the button now enters full screen mode, eliminating the full screen button at the top right corner of windows that has been present since OS X Lion. However, holding the Option key (⌥) while clicking the zoom button continues to invoke the original behavior.[11]:123-124

Beta testing[edit]

Apple has once again initiated a new public beta program for OS X, a practice not seen with its operating systems since 2000's US$29.95 Mac OS X Public Beta which had preceded the release of Mac OS X v10.0. Yosemite is part of the new OS X Beta Seed Program, a public beta program which allows the first 1 million[12] Macintosh users to download and test the Yosemite beta at no charge. Beta testers are required to acknowledge the potential risks involved with prerelease software, and sign a non-disclosure agreement (NDA).[13] The program was released on July 24, 2014.[14]

As with previous releases of OS X, Apple offers preview releases to developers, usually every two weeks on Monday until the final retail release. This is available to developers signed up for Mac Developer Program through the Mac Dev Center.

System requirements[edit]

All Macintosh products capable of running OS X Mavericks are supported by Yosemite; as with Mavericks, 2 GB of RAM, 8 GB of available storage, and OS X 10.6.8 (Snow Leopard) or later are required.[15] However, in order to take full advantage of the features in Continuity, a Mac with Bluetooth LE (Bluetooth 4.0) is needed.

These are the models compatible with OS X Yosemite:

  • iMac (Mid 2007 or later)
  • MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)
  • MacBook Pro (13-inch, Mid-2009 or later), (15-inch, Mid/Late 2007 or later), (17-inch, Late 2007 or later)
  • MacBook Air (Late 2008 or later)
  • Mac Mini (Early 2009 or later)
  • Mac Pro (Early 2008 or later)
  • Xserve (Early 2009)

These are the models that have Bluetooth LE support, and that therefore support Continuity:


  1. ^ Gurman, Mark (August 18, 2014). "Apple releases OS X Yosemite Developer Preview 6". appleinsider. Retrieved August 10, 2014. 
  2. ^ "OS X Yosemite Beta Guide". Apple, Inc. Retrieved August 11, 2014. 
  3. ^ http://www.apple.com/osx/preview/
  4. ^ "Apple - OS X Mavericks - Do even more with new apps and features.". Apple Inc. (US). "OS X Yosemite. Coming this fall." 
  5. ^ "Apple - OS X Mavericks - Do even more with new apps and features.". Apple Inc. (NZ). "OS X Yosemite. Coming this spring." 
  6. ^ a b c "OS X Yosemite: Apple's latest desktop OS works even better with your iPhone". Engadget. Retrieved June 3, 2014. 
  7. ^ a b "OS X Yosemite unveiled at WWDC, features big UI overhaul". Ars Technica. Retrieved June 3, 2014. 
  8. ^ "Apple Changes OS X's Main Font For The First Time Ever". Fast Co Design. Retrieved June 3, 2014. 
  9. ^ "OS X Yosemite’s "Continuity" links apps and more across desktop and mobile". Ars Technica. Retrieved June 3, 2014. 
  10. ^ "OS X Yosemite revealed: Translucent windows, cross-platform Continuity, and HTML 5 DRM come to the Mac". ExtremeTech. Retrieved June 3, 2014. 
  11. ^ Adapting your app to the new UI of OS X Yosemite. Apple Inc. June 3, 2014. Retrieved August 10, 2014. 
  12. ^ "OS X Beta Program". Apple Inc. Retrieved July 7, 2014. 
  13. ^ "OS X Beta Program Frequently Asked Questions". Apple Inc. Retrieved July 7, 2014. 
  14. ^ "Apple to release first public beta of OS X Yosemite on Thursday". AppleInsider. AppleInsider. July 23, 2014. Retrieved July 24, 2014. 
  15. ^ "PSA: The iDevices and Macs that will support iOS 8 and OS X 10.10". Ars Technica. Retrieved June 3, 2014. 

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