Vendor Portal v2026.05.27-0 release notes (#4100)

* Vendor Portal v2026.05.27-0 release notes

* Add missing improvements and bug fixes to v2026.05.27-0 release notes

Adds support bundle upload improvement (500MB->2GB for New EP),
channel change update fix, and EC image path fix that were missing
from the automated release notes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Update rn-vendor-platform.md

---------

Co-authored-by: Amber Alston <amber@replicated.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Amber Alston <amberlalston@gmail.com>

Author: 3 people

docs/release-notes/rn-vendor-platform.md

@@ -10,6 +10,23 @@ This topic contains release notes for the Replicated Vendor Platform, which incl
 
 <!--RELEASE_NOTES_PLACEHOLDER-->
 
+## v2026.05.27-0
+
+Released on May 27, 2026
+
+### New Features {#new-features-v2026-05-27-0}
+* Improved new Enterprise Portal repo relinking with easier template access and clearer repo selectors.
+* Adds a checklist to add new customers to the new Enterprise Portal for auto invites.
+* Redirects licenses to enabled enterprise portal version.
+
+### Improvements {#improvements-v2026-05-27-0}
+* Increases the maximum support bundle upload size in the New Enterprise Portal from 500 MB to 2 GB. Uploads now go directly to S3 for better performance and reliability. The Classic Enterprise Portal retains the 500 MB limit.
+
+### Bug Fixes {#bug-fixes-v2026-05-27-0}
+* Fixed an issue where New Enterprise Portal instance updates showed permanently up-to-date after a customer's channel was changed.
+* Fixed New Enterprise Portal Embedded Cluster install and update push commands to use the correct private registry image paths.
+* Informs user they are already logged in when visiting the new Enterprise Portal /signup page instead of immediately redirecting.
+
 ## v2026.05.19-2
 
 Released on May 19, 2026