That's...a long title. I've published release packages for System.Diagnostics support for NServiceBus and MongoDB:
And published new beta packages targeting the beta release of OpenTelemetry:
The Diagnostics packages are separate from the OpenTelemetry ones and only reference System.Diagnostics package. The OpenTelemetry ones now use OpenTelemetry beta, which switches to solely using Activity for recording OpenTelemetry spans, instead of mapping to a Span.