Remove "(not released yet)" as preparation

README.md

diff --git a/README.md b/README.md
index 099f7e1..d3a4a1f 100644
--- a/README.md
+++ b/README.md
@@ -402,7 +402,7 @@
 
 For more detailed information, see our [Upgrading](http://pulsar.apache.org/docs/helm-upgrade/) guide.
 
-## Upgrading to Helm chart version 4.2.0 (not released yet)
+## Upgrading to Helm chart version 4.2.0
 
 ### TLS configuration for ZooKeeper has changed