The gwx tool guy says you might get unlucky before that even:
"Over Thanksgiving weekend I started getting reports that the Windows Update 'AllowOSUpgrade' setting was getting flipped back on on a number of peoples' PCs, and it keeps re-setting itself at least once a day if they switch it back off," said Josh Mayfield, the software engineer who created GWX Control Panel."
A few weeks ago there were reports of 1511 automatically disabling/uninstalling some major AV endpoint software it did not like. I am glad I did not board that particular train yet. It may be necessary but it is not the best way for users to remove without notification.