Changes look good, except the badly formatted Solr New Features entry for "SOLR-9812: SOLR-9911, SOLR-9960” (sub-bullets wrongly promoted to top level items). I’ll commit fixes to master, branch_6x and branch_6_4 (in case of respin), but I don’t think this problem is worthy of respin.
I closed the new issue about the Plugins/Stats page since it's a
duplicate of one Varun filed the other day - SOLR-9969. It's caused by
the MBean request handler not returning data for the new metrics
Andrzej told me offline that it would be a back-compat breaking change
to change the handler. Perhaps in the meantime the UI can be modified
to omit those from display.