Zephyr Enterprise 6.7.2 includes the following improvements:
Upgraded the supported version of Elasticsearch to 6.8.1. Please note that Elasticsearch 5.5.0. is not supported anymore, so when upgrading Zephyr Enterprise to version 6.7.2, you need to upgrade Elasticsearch as well. For information on how to do that, see Zephyr On-Premise Upgrade Instructions.
Performance improvements on the interface to Jira, so that links to Zephyr cases in Jira tickets are updated faster now.