AWS m2 documentation change

Service: m2 · 2026-07-01 · Documentation low

File: m2/latest/userguide/system-commands-utilities.md

Summary

Updated service availability information to announce closure of new customer access for AWS Mainframe Modernization self-managed experience and reiterate closure for managed runtime environment

Security assessment

Change announces service deprecation timelines without addressing specific vulnerabilities. Mentions ongoing security improvements but doesn't document new security features or vulnerabilities.

Diff

diff --git a/m2/latest/userguide/system-commands-utilities.md b/m2/latest/userguide/system-commands-utilities.md
index e6eae6c03..0bd38dfd9 100644
--- a//m2/latest/userguide/system-commands-utilities.md
+++ b//m2/latest/userguide/system-commands-utilities.md
@@ -9 +9,3 @@ IKJEFT1A/IKJEFT1B/KEQEFT01/IKJEFT01/DSNDBTCHQCMDEXC
-AWS Mainframe Modernization Service (Managed Runtime Environment experience) is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html).
+After careful consideration, we have made the decision to close new customer access to **AWS Mainframe Modernization self-managed experience** , effective July 30, 2026. Existing customers can continue to use the service as normal. AWS continues to invest in security and availability improvements for AWS Mainframe Modernization self-managed experience, but we do not plan to introduce new features. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). 
+
+**AWS Mainframe Modernization Service (Managed Runtime Environment experience)** is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html).