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Update Metrics status in README.md #1722

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28 changes: 7 additions & 21 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -13,33 +13,19 @@ The C++ [OpenTelemetry](https://opentelemetry.io/) client.
| Signal | Status | Project |
| ------- | ----------------------- | ------------------------------------------------------------------------ |
| Traces | Public Release | N/A |
| Metrics | Release Candidate [1,2] | N/A |
| Logs | Experimental [3] | N/A |

* [1]: The metric implementation is in release candidate phase. There would be
few iterations of new feature additions, and bug fixes before it is
publically available. Few breaking changes in API and SDK are expected.
* [2]: The earlier implementation (based on old
specification) is now deprecated, and would be removed once new implementation
is declared stable. The older implementation can be included in build by setting
| Metrics | Public Release [1] | N/A |
| Logs | Experimental [2] | [Release Milestone](https:/open-telemetry/opentelemetry-cpp/milestone/18)|

* [1]: The older metrics implementation (based on old
specification) is now deprecated, and would be removed soon.
This can be included in build by setting
`ENABLE_METRICS_PREVIEW` preprocessor macro, and is included under
`*/_metrics/*` directory.
* [3]: The current Log Signal Implementation is Experimental, and will change as
* [2]: The current Log Signal Implementation is Experimental, and will change as
the current OpenTelemetry Log specification matures. The current
implementation can be included in build by setting `ENABLE_LOGS_PREVIEW`
preprocessor macro.

## OpenTelemetry Specification Compatibility Matrix

| API Version | Core Version | Contrib Version [1] |
| ----------- |--------------|-------------------------|
| 1.0.0 | 1.0.0-rc4 | N/A |
| 1.0.0 | 1.0.0 | N/A |
| 1.9.0 | 1.6.0 | N/A |

* [1]: We don't have releases for opentelemetry-cpp contrib repo. This may
change in future.

## Supported C++ Versions

Code shipped from this repository generally supports the following versions of
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