Tim Anderson at The Register found the following passage in the License Agreement for Windows 10 Build 10240:
"The Software periodically checks for system and app updates, and downloads and installs them for you.
You may obtain updates only from Microsoft or authorised 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."
As many are already aware, Windows 10 Build 10240 is the current release candidate for Windows 10. Now we know Microsoft's intent to become more flexibile with their software updates, much in the same way as Google handles Chrome OS. Policy changes for home users enables Microsoft to target consumer apps in a more efficient mannor, granting developers more power to iterate and less worry about feature support. Good news for developers and consumers alike.