Looks like Windows 10 isn't going to allow its home users to skip any updates. This news comes from the EULA attached to the recent preview release of Windows 10 (Build 10240), which was initially found by The Register. Skimming through the text you can see that Windows 10 is going to take the responsibility for any and all updates, whether people know they're agreeing to it or not:
"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." For one reason or another, only Home users are effected by the mandatory and automatic updates. Owners of the Enterprise Edition can choose to sign up for the Long Term Service Branch, thereby allowing businesses to update every 2-3 years. Windows 10 will be available on July 29, and will be a free upgrade for Windows 8.1 and 7 users.