How do Lumia Cyan and Win Phone 8.1 updates differ with regard to user enhancements?
It appears the the Lumia Cyan update includes the WP8.1 update so the only differences will be what the Cyan firmware update brings to the devices. See: http://www.nokiapoweruser.com/windows-phone-8-1-full-changelog-hands-on-demo-videos-tips-tutorials/
Thank you. It was seen , that Lumia Cyan and Win 8.1 are different updates but rolled out simultaneously to users.
From what I have found, that does not necessarily hold. Users who get the Cyan update WILL get the WP8.1 update. I have yet to see anything that says users cannot update to WP8.1 without getting the Cyan update. They do not necessarily need to be a matched pair for all devices although I cannot find a resource to clarify the issue.