Kibana 4.6.0 introduces several significant enhancements, including the much-requested Reporting plugin, which allows users to generate PDF reports from Kibana visualizations and dashboards. This release also ensures compatibility with the latest Elasticsearch version 2.4.0, facilitating seamless Elastic Stack upgrades. Notable improvements in Linux packages make installing, upgrading, and using Kibana smoother, especially for those upgrading from version 4.5.4, with packages now offering better cleanup, version-based repositories, and improved logging. Additional features include options to configure headers for Elasticsearch requests, a designated data space for plugins, and enhanced status page information. Various bug fixes, such as improvements to error notifications and visualization editor controls, further refine the user experience, while deprecated features like sorting terms aggs by ascending _count are being phased out to enhance accuracy in future releases.