I'm viewing the Red Hat Product Errata web page with advisories sorted by "Publish Date" in descending order. Today's date is 23 Sep 2017, and the latest advisory shown on the page is dated "19 Sep 2017".

However, the CentOS-announce mailing list has published two later advisories dated 2017-09-21: RHSA-2017:2788 and RHSA-2017:2790.

Neither of these advisories appear on Red Hat Product Errata when I sort by "Publish Date".

This is not what I expected.