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Mac OS X Lion (version 10.7; marketed as OS X Lion) is the eighth major release of Mac OS X, Apple's desktop and server operating system for Macintosh computers. A preview of Lion was publicly unveiled at the "Back to the Mac" Apple Special Event on October 20, 2010. It brings many developments made in Apple's iOS, such as an easily navigable display of installed applications, to the Mac, and includes support for the Mac App Store, as introduced in Mac OS X Snow Leopard version 10.6.6.〔(【引用サイトリンク】title=Apple unveils new MacBook Airs, previews Lion )〕 On February 24, 2011, the first developer's preview of Lion (11A390) was released to subscribers to the Apple Developer program. Other developer previews were subsequently released, with Lion Preview 4 (11A480b) being released at WWDC 2011.〔(【引用サイトリンク】url=http://www.appleinsider.com/articles/11/06/06/apple_says_devices_updated_to_ios_5_beta_cant_be_restored_to_earlier_versions.html )〕 Lion was released to manufacturing on July 1, 2011,〔(【引用サイトリンク】url=http://9to5mac.com/2011/07/01/os-x-lion-golden-master-seeded-to-developers/ )〕 followed by its final release via the Mac App Store on July 20, 2011. Apple reported over one million Lion sales on the first day of its release. , Mac OS X Lion has sold over six million copies worldwide. ==Release and distribution== On June 6, 2011, at the Apple Worldwide Developers Conference, it was announced that the official release for Lion would be in July 2011. The specific release date of July 20 was not confirmed until the day before, July 19, by Apple CFO, Peter Oppenheimer, as part of Apple's 2011 third-quarter earnings announcement.〔(Apple's OS X Lion Launching, iPad, iPhone Quarterly Sales Soar )〕 Apple did not initially announce any physical media distribution for Lion, such as a set of CD-ROMs or a DVD-ROM as used for past releases. Instead, the operating system was said to be available exclusively as a download from the Mac App Store for US$29.99.〔(【引用サイトリンク】title=Mac OS X Lion Set for July Debut Priced at $29.99, Mac App Store Exclusive )〕 The only prior version of OS X that supports the Mac App Store is Snow Leopard, which implied that any machines that support Lion currently running Tiger or Leopard would first have to be upgraded to Snow Leopard, as opposed to allowing a direct upgrade to Lion. Apple later announced two alternative distribution mechanisms for the benefit of users without broadband Internet access: in-store downloads at retail Apple Stores, and a USB flash drive containing the OS, priced at US$69, available through the online Apple Store beginning in August. On August 4, 2011, Apple started to take orders for Mac OS X Lion's USB installation flash drives for $69.99. The Server portion of Lion is available as a separate download from the Mac App Store for US$49.99, which is in addition to the purchase price of Lion itself.〔(【引用サイトリンク】url=https://www.macupdate.com/app/mac/39488/apple-os-x-lion-server )〕 In July 2012, Lion was removed from the Mac App Store and retail Apple stores following the release of OS X Mountain Lion. Following the removal of Lion from the Mac App Store, customers could still purchase Lion by phone at the reduced price of $20. In October 2013, Lion was returned to the Apple Store website concurrently with Mountain Lion following the release of OS X Mavericks for the convenience of users who cannot run Mavericks on older Mac models. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mac OS X Lion」の詳細全文を読む スポンサード リンク
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