Kibana 4.2.0-beta1 has been released to complement the Elasticsearch 2.0.0-beta1, providing new features and bug fixes. Notable updates include persistent colors that ensure consistent color representation on dashboards, a server status page that appears when connectivity issues arise, and a feature that allows filtering through a visualization's legend. Additionally, Olson timezone support in Elasticsearch 2.0 enhances the accuracy of event timing across different time zones. Structural improvements involve updating libraries, ensuring consistent builds through "shrink-wrapped" dependencies, and conducting unit tests in various browsers to better reflect real-world usage. Users are encouraged to engage with the community on the Discuss Kibana forums and report any bugs on GitHub.