Update _index.md

Added Metrics Stream Engine data
Still need to link the transition plan here
and @AlonMagrafta to review

Author: maayanagranat

content/operate/rs/clusters/monitoring/_index.md

@@ -13,14 +13,22 @@ weight: 96
 ---
 You can use the metrics that measure the performance of your Redis Enterprise Software clusters, nodes, databases, and shards
 to monitor the performance of your databases.
-In the Redis Enterprise Cluster Manager UI, you can see real-time metrics and configure alerts that send notifications based on alert parameters. You can also access metrics and configure alerts through the REST API.
+In the Redis Enterprise Cluster Manager UI, you can see metrics and configure alerts that send notifications based on alert parameters. You can also access metrics and configure alerts through the REST API.
+
+Starting with version 7.8.2 Redis Enterprise has a new metrics stream engine which exposes new version of prometheus scraping endpoint (In preview)
+This engine exports all time-series metrics to external monitoring tools such as Grafana, DataDog, NewRelic and Dynatrace using Prometheus.
+
+With this new capability, you are able to monitor real-time metrics during maintenance and stay informed with full visibility into performance even during events like failovers and scaling.
+
+If you are already using our scraping endpoint for integration, visit our transition page. You can scrape both old and new endpoints simultaneously, allowing you to prepare your dashboards in advance and switch seamlessly when ready.
+In coming maintenance releases we will share operational dashboards and basic alerts configuration based on the new engine.
 
 To integrate Redis Enterprise metrics into your monitoring environment, see the integration guides for [Prometheus and Grafana]({{< relref "/integrate/prometheus-with-redis-enterprise/" >}}) or [Uptrace]({{< relref "/integrate/uptrace-with-redis-enterprise/" >}}).
 
 Make sure you read the [definition of each metric]({{< relref "/operate/rs/references/metrics/" >}})
 so that you understand exactly what it represents.
 
-## Real-time metrics
+## Cluster Manager Metrics
 
 You can see the metrics of the cluster in: