Items needing release notes are in the links section. The following Jira query was used to generate the list of 2.4.57 SP4 bugs:

project = JBCS AND issuetype = Bug AND ("Target Release" = "httpd 2.4.57.SP4 GA" OR fixVersion = "httpd 2.4.57.SP4 GA")

Note: Engineering tickets marked as "Red Hat Employee" will not be included in the release notes.