A preview of Lion was publicly unveiled at Apple's "Back to the Mac" 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. On February 24, 2011, the first developer's preview of Lion (11A390) was released to subscribers of Apple's developers program. Other developer previews were subsequently released, with Lion Preview 4 (11A480b) being released at WWDC 2011.
Lion achieved golden master status on July 1, 2011, followed by its final release via the Mac App Store on July 20, 2011. Apple reported over 1 million Lion sales on the first day of its release. As of October 2011, Mac OS X Lion has sold over 6 million copies worldwide.
|Mac OS X v10.7 "Lion"|
|Part of the Mac OS X family|
|Screenshot of Mac OS X Lion|
|Release date||July 20, 2011|
|Current version||10.7.2 (11C74) (October 12, 2011)|
|Source model||Closed source (with open source components)|
|License||APSL and Apple EULA|
|Update method||Apple Software Update|
|Preceded by||Mac OS X v10.6 "Snow Leopard"|
Hardware supportThe first developer preview of Lion added TRIM support for SSDs shipped with Macs, which is also included in the latest version of Snow Leopard (10.6.8) shipping with current MacBook Pros before July 20, 2011. As of yet, there is no TRIM support for other SSDs.