Both references to the number of supported cluster nodes in RHEL 7.7 are ready to be published on the Portal.
Actually, since 7.7 beta is already out I can publish this now. https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/high_availability_add-on_reference/index#s1-configconsider-HAAR https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/high_availability_add-on_reference/index#pacemaker_remote