Kibana 7.0.0 introduces a range of significant updates, including a refreshed design with a global header and a collapsed side navigation for more space, as well as the new default Kibana Query Language (KQL) that simplifies query syntax with features like autocomplete for users with a Basic license or higher. The release also includes a dark theme, responsive dashboards optimized for mobile use, and revamped timepicker and filter functionalities for improved user interaction. The saved objects structure has been enhanced for better export and transfer of dashboards and their dependencies, while Canvas now features an expandable expression editor and additional keyboard shortcuts for improved usability. Overall, these updates aim to enhance user experience and functionality, inviting users to explore the new features and provide feedback through their Discuss forum.