Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A ranar 24 ga Fabrairu, 2011, an saki farkon mai haɓaka Lion (11A390) ga masu biyan kuɗi zuwa shirin Apple Developer. Sauran masu haɓaka abubuwan da aka gabatar sun fito, tare da Lion Preview 4 (11A480b) da aka saki a WWDC 2011.An saki Lion zuwa masana'antu a ranar 1 ga Yuli, 2011, sannan kuma an sake shi ta ƙarshe ta hanyar Mac App Store a ranar 20 ga Yuli, 2011. Apple ya ba da rahoton tallace-tallace sama da miliyan ɗaya na Lion a ranar farko ta fitowar sa. Ya zuwa Oktoba 2011, Mac OS X Lion ya sayar da kwafi sama da miliyan shida a duk duniya.Lion shine sakin karshe wanda Bertrand Serlet ya kula da ci gabansa, wanda ake ɗauka a matsayin "mahaifin kafa Mac OS X".  Tambaya: Yaushe ne masu biyan kuɗi na shirin Apple Developer suka sami samfoti na farko na Lion?
24 ga Fabrairu, shekara ta 2011