Update README with OpenCensus sunset notice (#1293)
diff --git a/README.md b/README.md
index 1d7e837..557b431 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,11 @@
+> **Warning**
+>
+> OpenCensus and OpenTracing have merged to form [OpenTelemetry](https://opentelemetry.io), which serves as the next major version of OpenCensus and OpenTracing.
+>
+> OpenTelemetry has now reached feature parity with OpenCensus, with tracing and metrics SDKs available in .NET, Golang, Java, NodeJS, and Python. **All OpenCensus Github repositories, except [census-instrumentation/opencensus-python](https://github.com/census-instrumentation/opencensus-python), will be archived on July 31st, 2023**. We encourage users to migrate to OpenTelemetry by this date.
+>
+> To help you gradually migrate your instrumentation to OpenTelemetry, bridges are available in Java, Go, Python, and JS. [**Read the full blog post to learn more**](https://opentelemetry.io/blog/2023/sunsetting-opencensus/).
+
# OpenCensus Libraries for Go
[![Build Status][travis-image]][travis-url]
