Upgrade your Mac to OS X Yosemite and you will have an elegant design that is both familiar and new at the same time. The apps you use every day will have powerful new features. And your Mac, iPhone and iPad will work together in amazing new ways. You will also have the latest technology and the best security. like having a new Mac for free.
As promised in the earlier keynote, the OS X Yosemite (version 10.10 of the Apple desktop operating system) is now available on the Mac App Store. It is free for all users and runs on Macs launched since 2009, being compatible even with some models from 2007 and 2008. Continuity requires iOS 8.1 (which will be out next Monday) and some of its features only work on Newer Macs with Bluetooth LE chips. THE OS X Server 4.0 It is also available at MAS and costs US $ 20.
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Update · 10/16/2014 at 7:12 pm
The final build of OS X Yosemite at 14A389, while GM Candidate 3 was 14A388a and Beta 6 was 14A388b. In other words, it must not have changed much but everyone must update.