docs: change supported versions when v20 releases (#61238)

PR Close #61238

Author: thesmiler

adev/src/content/reference/releases.md

@@ -74,9 +74,9 @@ HELPFUL: Approximate dates are offered as general guidance and are subject to ch
 
 | Version | Date               |
 |:--------|:-------------------|
-| v19.1   | Week of 2025-01-13 |
-| v19.2   | Week of 2025-02-24 |
-| v20.0   | Week of 2025-05-26 |
+| v20.1   | TBD |
+| v20.2   | TBD |
+| v21.0   | TBD |
 
 ### Support window
 
@@ -93,11 +93,11 @@ The following table provides the status for Angular versions under support.
 
 | Version | Status | Released   | Active ends | LTS ends   |
 |:--------|:-------|:-----------|:------------|:-----------|
-| ^19.0.0 | Active | 2024-11-19 | 2025-05-19  | 2026-05-19 |
-| ^18.0.0 | LTS    | 2024-05-22 | 2024-11-19  | 2025-11-19 |
-| ^17.0.0 | LTS    | 2023-11-08 | 2024-05-08  | 2025-05-15 |
+| ^20.0.0 | Active | 2025-05-28 | 2025-11-21  | 2026-11-21 |
+| ^19.0.0 | LTS    | 2024-11-19 | 2025-05-28  | 2026-05-19 |
+| ^18.0.0 | LTS    | 2024-05-22 | 2024-11-19  | 2025-11-21 |
 
-Angular versions v2 to v16 are no longer supported.
+Angular versions v2 to v17 are no longer supported.
 
 ### LTS fixes