If you want to run Windows 10 Home then you will have to agree to Microsoft's terms, and those now state that you agree to have updates automatically installed on your system.You're agreeing to this when you accept the terms of the licensing agreement (you do read the EULA, right? Right?). Specifically [emphasis added]:
"Updates. The software periodically checks for system and app updates, and downloads and installs them for you. You may obtain updates only from Microsoft or authorized sources, and Microsoft may need to update your system to provide you with those updates. By accepting this agreement, you agree to receive these types of automatic updates without any additional notice."
Since it's not just security updates that Microsoft is going to be pushing out to Windows 10 users but feature updates too, users will have to trust Microsoft to exercise good judgment as to what it pushes down the pipes to end users.
Windows 10 Pro users get a bit more control over their systems, and will be able to switch over to the Current Branch for Business (CBB) version of Windows 10, which will allow them to delay feature updates. However, delaying for too long will result in security updates also being blocked.
I realize this is old news but the article brings up a good point. Will Microsoft push out things like it did previously as optional i.e. the Bing toolbar.And some updates have been toxic as the article mentions. I usually like to wait a week before doing the updates to see if there are any issues. Now you need Pro in order to avoid auto updates. Even Windows Pro users will have to eventually update features or they will lose security updates. So, even with Pro, you will have to accept a Feature Update even if you don't like it.