update readme to include environment indicator

README.md

@@ -143,6 +143,10 @@ Filters how many log items to store. Items are stored in array saved to the opti
 
 Define `TENUP_DISABLE_ACTIVITYLOG` as `true` to disable Activity Log.
 
+### Environment Indicator
+
+To enhance user awareness and minimize the risk of making unintended changes, 10up Experience includes a visual indicator integrated into the admin bar. This feature clearly displays which environment (e.g., development, staging, production) the user is currently working in.
+
 ## Support Level
 
 **Active:** 10up is actively working on this, and we expect to continue work for the foreseeable future including keeping tested up to the most recent version of WordPress.  Bug reports, feature requests, questions, and pull requests are welcome.