I think that's only for Windows Home. It's not clear, but I think Windows Pro users will be able to defer updates - see here:
"Windows 10 Pro users will have a little flexibility; they'll be able to switch from the mainstream release to the Current Branch for Business (CBB). This will give some control over when updates are deployed. While the CBB will essentially track the consumer release, it will allow feature updates to be held back for some amount of time; Anderson quotes a Microsoft executive saying that companies will have around eight months to prepare for each new feature update. Delay the feature update any further and they'll also be prevented from receiving security updates."
I certainly hope that that's the case!
Not as much flexibility as we have with windows 8 and below.
windows 10 seems to want us to be linked in, to Ms account all the time. Cortana will not work if you are not signed into the MS account.
I have disabled cortana and blocked most of the other stuff Windows 10 want to know, like location, not that the location is correct, it thinks I am in Sheffield.
Desktop machine now powered by windows 8 pro 64bit, no dreaded metro and Linux , laptop by Linux