Do I need to update to OS X Yosemite public release from GM Candidate 3 or Public Beta 6?

If you are currently running either OS X Yosemite Golden Master Release Candidate 3 or Public Beta 6 and wondering how to upgrade to the final release seeded to the public on Thursday afternoon, the answer is that you are already running it. That’s right: Apple considers both pre-release software versions to be equivalent to the final version of OS X Yosemite released on the Mac App Store a matter of hours ago.
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