OpenTelemetry’s metrics capabilities are now available as release candidates! This means that the specification, APIs, SDKs, and other components that author, capture, process, and otherwise interact with metrics now have the full set of OpenTelemetry metrics functionality and are ready for use.
https://www.splunk.com/en_us/blog/devops/announcing-opentelemetry-metrics-are-now-available-as-release-candidates.html