Grafana v6.2 introduces several new features and improvements, including enhanced security measures with encrypted datasource passwords and browser caching disabled to protect sensitive information. The release also enhances the provisioning workflow by allowing environment variables and enables reloading configurations without restarting Grafana. It officially supports Elasticsearch 7 and introduces a new Bar Gauge panel, which optimizes space usage and offers unique display modes such as Basic, Gradient, and Retro LED. Lazy loading of panels not in view has been implemented to reduce data source load, and improvements have been made to table data support in the new react panels. Other minor updates include user time zone support, alert configuration enhancements, and various bug fixes across different data sources like Azure Monitor and InfluxDB. The release also notes the removal of the old package repository, urging users to switch to the new one by July 1.