Kibana 4 Beta 3 introduces several enhancements, including interactive charts and dashboards with clickable and toggleable filters for creating dynamic visualizations. The update also sees the integration of Elasticsearch scripting support, enabling users to create scripted fields treated as part of the documents within Kibana, though these fields are not searchable. For enhanced usability, JSON formatting and highlighting have been improved to make data more readable, with matching fields automatically highlighted and prioritized. Additionally, the update includes metric visualizations for displaying single, essential numbers on dashboards, and new features like "Link to" facilitate easy sharing of specific hits. Users are encouraged to provide feedback through GitHub or join the Kibana community on IRC for support and collaboration.