Golden master candidate, which means that, barring the discovery of a horrendous bug, this will be what ships. So, known bugs, however impactful, will not stop the release.<p>Shipping a second or third GM candidate is not unheard of. See for example <a href="http:&#x2F;&#x2F;www.macrumors.com&#x2F;2014&#x2F;10&#x2F;09&#x2F;third-yosemite-golden-master-candidate&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.macrumors.com&#x2F;2014&#x2F;10&#x2F;09&#x2F;third-yosemite-golden-ma...</a>