Docs - Changed warning for GMA added issue for personas

doc/user/group/saml_sso/group_managed_accounts.md

@@ -7,8 +7,11 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Group Managed Accounts **(PREMIUM)**
 
-CAUTION: **Warning:**
-This is a [Closed Beta](https://about.gitlab.com/handbook/product/#closed-beta) feature.
+CAUTION: **Caution:**
+This [Closed Beta](https://about.gitlab.com/handbook/product/#closed-beta) feature is being re-evaluated in favor of a different
+[identity model](https://gitlab.com/gitlab-org/gitlab/-/issues/218631) that does not require separate accounts.
+We recommend that group administrators who haven't yet implemented this feature wait for
+the new solution.
 
 > - [Introduced](https://gitlab.com/groups/gitlab-org/-/epics/709) in GitLab 12.1.
 > - It's deployed behind a feature flag, disabled by default.