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AWS m2 documentation change

Service: m2 · 2026-07-04 · Documentation low

File: m2/latest/userguide/ba-migration-notes.md

Summary

Updated the effective date for closing new customer access to AWS Mainframe Modernization self-managed experience from July 30, 2026 to June 30, 2026.

Security assessment

The change modifies only a date field. The existing note about security improvements remains unaltered, with no evidence of security issue remediation.

Diff

diff --git a/m2/latest/userguide/ba-migration-notes.md b/m2/latest/userguide/ba-migration-notes.md
index a7807e090..85664dfa7 100644
--- a//m2/latest/userguide/ba-migration-notes.md
+++ b//m2/latest/userguide/ba-migration-notes.md
@@ -9 +9 @@ Common upgradesMigrating from 3.10.0 to 4.0.0Migrating from 5.85.0 to 5.125.0
-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). 
+After careful consideration, we have made the decision to close new customer access to **AWS Mainframe Modernization self-managed experience** , effective June 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).