Added 03/06 Upcoming Releases Update

docs/pages/upcoming-releases.mdx

@@ -9,17 +9,10 @@ The Teleport team delivers a new major release roughly every 4 months.
 
 | Version | Date              |
 |---------|-------------------|
-| 15.1.2  | March 8, 2024     |
+| 15.1.3  | March 8, 2024     |
+| 15.2.0  | March 29, 2024    |
 
-### 15.1.2
-
-#### New paginated APIs
-
-Teleport's gRPC server will expose new paginated APIs for listing roles and
-access requests, which will improve performance on clusters with large numbers
-of these resources.
-
-*Delayed from Teleport 15.1.0*
+### 15.1.3
 
 #### SSH remote port forwarding
 
@@ -36,13 +29,23 @@ database objects (such as tables) in for PostgreSQL.
 
 *Delayed from Teleport 15.1.0*
 
+### 15.2.0
+
+#### New paginated APIs
+
+Teleport's gRPC server will expose new paginated APIs for listing roles and
+access requests, which will improve performance on clusters with large numbers
+of these resources.
+
+*Delayed from Teleport 15.1.0*
+
 ## Teleport Cloud
 
 The key deliverables for Teleport Cloud in the next quarter:
 
 | Week of       | Description                                |
 |---------------|--------------------------------------------|
-| March 4, 2024 | Teleport 15.1 will begin rollout on Cloud. |
+| April 1, 2024 | Teleport 15.2 will begin rollout on Cloud. |
 
 ## Production readiness