I have ArcGIS Pro 2.5.1 installed on a PC. Clicking the Settings within ArcGIS Pro shows that the version is 2.5.0. When I go to look at it in "Programs and Features", it says that version installed is 2.5.22081. (See screenshots below)
Checking for updates is blocked on this PC, but the same issue occurs on PCs in our organization that don't have checking for updates blocked, so I don't think it's related.
Has anyone else seen this? I definitely haven't downloaded this patch on any PCs yet, so I'm not sure why it's showing up here.