In the June 2018 update for Kibana, significant developments include the introduction of TypeScript support, enhancing the way JavaScript developers plan and design their code by providing stricter data contracts and easing the creation of Kibana plugins. The update also highlights new job openings for roles such as Senior Product Designer and Senior JavaScript Engineer, alongside advancements in platform features like the saved object API documentation, improvements in EUI components, and updates to the HTTP service implementation. Other notable updates involve enhancements to the visualizations and management facets of Kibana, such as improved console autocompletion, fixes in GIS and Canvas tools, and ongoing efforts to support SQL and reporting integrations, all contributing to a more robust and user-friendly experience for developers and users alike.