diff --git a/.spelling b/.spelling
index 7efd2b2bda..d04d0540e2 100644
--- a/.spelling
+++ b/.spelling
@@ -28,7 +28,6 @@
 1.26.x
 1.27.3
 1.27.x
-1.28.x
 1.3.x
 1.3.x.
 1.4.x
@@ -1131,6 +1130,9 @@ v0.14.0
 v0.8.0
 v1
 v1.21
+v1.26
+v1.27
+v1.28
 v1.29
 v1.55
 v1.55.1
diff --git a/content/en/docs/releases/supported-releases/index.md b/content/en/docs/releases/supported-releases/index.md
index 7b667e2c6b..44bf8f18fa 100644
--- a/content/en/docs/releases/supported-releases/index.md
+++ b/content/en/docs/releases/supported-releases/index.md
@@ -73,7 +73,6 @@ Please keep up-to-date and use a supported version.
 | 1.20.x           | 1.20.0+                                              |
 | 1.19.x           | 1.19.3+                                              |
 | 1.18.x           | 1.18.5+                                              |
-| 1.17.x           | 1.17.8+                                              |
 
 ## Supported Envoy Versions
 
@@ -81,11 +80,10 @@ Istio's data plane is based on [Envoy](https://github.com/envoyproxy/envoy).
 
 The relationship between the two project's versions:
 
-| Istio version | Envoy version |
-| ------------- | ------------- |
-| 1.20.x        | 1.28.x        |
-| 1.19.x        | 1.27.x        |
-| 1.18.x        | 1.26.x        |
-| 1.17.x        | 1.25.x        |
+| Istio version | Envoy release branch |
+| ------------- | -------------------- |
+| 1.20.x        | release/v1.28        |
+| 1.19.x        | release/v1.27        |
+| 1.18.x        | release/v1.26        |
 
-In general, Istio releases tend to map one to one with Envoy releases. You can find the precise Envoy commit used by Istio in [`istio/proxy`](https://github.com/istio/proxy/blob/master/WORKSPACE#L38).
+You can find the precise Envoy commit used by Istio in [`istio/proxy`](https://github.com/istio/proxy/blob/master/WORKSPACE#L38).