Intuit decided that they knew better when your software should be updated than you do.

Because of this decision they set up the update process to be automated, If you look at 

Information>Logs>Product update logs you can see the list of updates that have been installed.

A couple of weeks ago Proseries promised to give us an option to opt out of the automatic updates, because so many of us were bi****** complaining about it, but that function has not appeared yet.