Not OP but he&#x27;s probably referring to the Education Preview updates. They&#x27;re referenced at the bottom of the linked page with more info at <a href="https:&#x2F;&#x2F;www.apple.com&#x2F;education&#x2F;preview&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.apple.com&#x2F;education&#x2F;preview&#x2F;</a>.