I just opened an update dialog (Help > Update Manager) and was offered an update of the PSoC Creator itself. (I already have the newest 4.1 version.)
When I clicked on Update, an installer was downloaded and launched, however no other choices but "Custom", "Repair" and "Remove" options were available. I didn't want to perform any of those, so I canceled the dialog.
After restarting PSoC Creator, nothing happened and the update has not been advertised anymore.
When that happens again, I would suggest to try a "Repair".