The OneAgent release notes for version 1.211, published on March 8, 2021, provide detailed information on the changes, updates, and resolved issues associated with this release. Key updates include the end of Dynatrace Real User Monitoring (RUM) support for Microsoft Edge Legacy due to Microsoft's termination of support and new tracing support added for IBM Integration Bus nodes. Additionally, the notes outline future changes in technology and operating system support, with specific OneAgent versions being the last to support various OpenTelemetry versions for Go and Node.js, and the discontinuation of support for certain operating systems by specified dates. The release also details a range of resolved issues across different components like mainframe, Java, .NET, Go, IBM Integration Bus, AI causation engine, Node.js, mobile, and JavaScript, improving performance, fixing bugs, and enhancing monitoring capabilities.