I just installed Windows 10 and discovered this screen by accident: http://imgur.com/HqfGoPl
I somehow feel like a social contract between me and my operating system was broken here. If an app does this it feels different because I can close the app, but an operating system by default? What if I was on a metered connection?
This has the potential to speed up updates within a company's internal network. Unless you configure WSUS, your external link could get seriously compromised if all PCs tried to update at the same time.
If you were on a metered connection, it wouldn't use that connection to update, but you have to define a connection as metered, also how does this surprise people its been there for months in the insider preview