So you’re looking forward to upgrading to the next CB version of SCCM and growing frustrated at the fact there is nothing appearing in Updates and Servicing pane. In fact, there should be several hotfixes showing in addition to the latest and greatest version of ConfigMgr. But….nothing.
You can be logged in as a full administrator and nothing will appear!
Open the console as the user which installed ConfigMgr in the first instance. Failing this (user has since been deleted, etc) go to Administration | Security | Administrative Users and look for a user that has All instances of the objects that are related to the assigned security roles selected. The chances are, that the user you are having problems with doesn’t have this selected (yes, even if they’re a full admin) and this is the crux of the problem.
Now, open the console with the user who has this permission and you should now get a message saying that there are updates available. Go to the security node and make the appropriate changes described above to the users or groups that you wish to have access to this view.