Splunk Forwarder support by Splunk

Hi - We are upgrading Splunk to 7.2.8 since 7.0 is out of support. the Universal forwarders are not mentioned in the Splunk support page and refers only to the Splunk enterprise. Does the UF need to be upgraded to be covered under Splunk Support? https://www.splunk.com/en_us/legal/splunk-software-support-policy.html