Editing MacOS version history (section)

=== OS X 10.9 Mavericks ===
[[OS X Mavericks]] was released on October 22, 2013, as a free update through the [[Mac App Store]] worldwide.<ref>{{cite press release|url=https://www.apple.com/newsroom/2013/06/10Apple-Releases-Developer-Preview-of-OS-X-Mavericks-With-More-Than-200-New-Features/|title=Apple Releases Developer Preview of OS X Mavericks With More Than 200 New Features|publisher=Apple Inc.|date=June 10, 2013|access-date=June 25, 2020|archive-date=February 13, 2018|archive-url=https://web.archive.org/web/20180213144553/https://www.apple.com/newsroom/2013/06/10Apple-Releases-Developer-Preview-of-OS-X-Mavericks-With-More-Than-200-New-Features/|url-status=live}}</ref>
It placed emphasis on battery life, Finder enhancements, other enhancements for power users, and continued iCloud integration, as well as bringing more of Apple's iOS apps to the OS X platform. [[Apple Books|iBooks]] and [[Apple Maps]] applications were added. Mavericks requires 2 GB of memory to operate. It is the first version named under Apple's then-new theme of places in [[California]], dubbed ''Mavericks'' after the [[Mavericks, California|surfing location]].<ref name="apple.com">{{cite AV media|url=https://www.apple.com/apple-events/june-2013/|title=WWDC 2013 Keynote|publisher=Apple Inc.|date=June 10, 2013|url-status=dead|archive-url=https://web.archive.org/web/20140218160739/http://www.apple.com/apple-events/june-2013/|archive-date=February 18, 2014}}</ref><ref>{{cite web|url=https://techcrunch.com/2013/06/10/os-x-mavericks/|title=Apple Has A New, California-Based Naming Scheme For OS X, Starting With OS X Mavericks|first1=Anthony|last1=Ha|date=Jun 10, 2013|publisher=[[TechCrunch]]|url-status=live|archive-url=https://web.archive.org/web/20170709214256/https://techcrunch.com/2013/06/10/os-x-mavericks/|archive-date=2017-07-09}}</ref> Unlike previous versions of OS X, which had progressively decreasing prices since 10.6, 10.9 was available at no charge to all users of compatible systems running Snow Leopard (10.6) or later,<ref>{{cite web|url=https://www.theverge.com/2013/10/22/4865858/os-x-10-9-mavericks-release-date-price|title=OS X Mavericks now available as a free download|first1=Aaron|last1=Souppouris|publisher=[[The Verge]]|date=October 22, 2013|url-status=live|archive-url=https://web.archive.org/web/20131022172524/http://www.theverge.com/2013/10/22/4865858/os-x-10-9-mavericks-release-date-price|archive-date=October 22, 2013}}</ref> beginning Apple's policy of free upgrades for life on its operating system and business software.<ref>{{cite web|url=https://finance.yahoo.com/news/apple-kicks-off-event-expected-173557504.html|title=Apple unveils iPad Air, new Macs for holidays|first1=Poornima|last1=Gupta|first2=Edwin|last2=Chan|date=October 22, 2013|publisher=[[Reuters]]|url-status=live|archive-url=https://web.archive.org/web/20160424103109/http://finance.yahoo.com/news/apple-kicks-off-event-expected-173557504.html|archive-date=April 24, 2016}}</ref>