What's with the Sage CRM 2023 R1 Patch on the KB

The KB lists two items available for download 2023 R1, the Full Install and a patch, both Published on 4/19/23.

1) under LATEST PRODUCT: Download Sage CRM 2023 R1 Full Install for Standalone and Sage 300; Solution ID: 119259, 

2) under LATEST UPDATE: Download Sage CRM 2023 R1 Patch for Standalone and Sage 300; Solution ID: 119260

My questions are with #2, the Patch.  I don't see any Announcements for this, nor do I find anything relating to it when I search Sage City - or Google even - other than a patch related to Sage 100.  Nor are there any Release Notes for it.  So can anyone tell me what it's for?

Also, in my test environment, I've downloaded and installed the Patch release.  The login splash screen still just shows Sage CRM 2023 R1 as the version number, as does My CRM --> Preferences --> About CRM.  The value for the Version parameter in Custom_SysParams still shows 2023R1.  So it sure looks like nothing's changed.