Update README.md

README.md

@@ -4,6 +4,10 @@ NATS Streaming is an extremely performant, lightweight reliable streaming platfo
 
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+# WARNING:  Deprecation Notice :warning:
+
+The NATS Streaming Server is being deprecated.  Critical bug fixes and security fixes will be applied until June of 2023.  NATS enabled applications requiring persistence should use [JetStream](https://docs.nats.io/jetstream/jetstream).
+
 ## Documentation
 
 * [Official documentation](https://docs.nats.io/nats-streaming-concepts)