Telegraf 1.9.1 has been released with improvements to several plugins, including agent and metric memory management, as well as fixes for issues in plugins like graylog input and kafka consumer input. InfluxDB 1.7.2 includes updates on its Flux technical preview, addressing issues with DROPs and DELETEs, and improving sub-query performance. Chronograf 1.7.4 has fixed an issue where string values were being interpreted as numbers in Table graphs, enhanced the Log Viewer to fix scrolling and loading issues, and added a new configuration setting for persistence of topics. Kapacitor 1.5.2 includes features like adding links to notifications sent to PagerDuty v2 API and additional metadata to notifications sent to Sensu, as well as improvements to its barrier node functionality.