I have a nice anecdote about updates and win 8. 
I have several systems. They all have single purpouses. Two for music, and one just for mails and internet, one for work, and so on.
Recently I changed my internetsurfing buddy because it was time to do so.
Since everything is win8 nowadays, know i am a proud owner of two win 8 licenses. 
Came home from the shop with my litte internetbuddy and installing went very fast and without a problem.
But… once logged in how great was my surprise that my internetbuddy actually presented itself visually as one of my music computers. (!!) (one that has also win 8)
Everything was there: links, passwords, colors, icons, shortcuts… I didn’t do a damn thing.
So i went looking for the reason of this, and since win 8 your entire desktop, settings and so on are copied to the cloud.
You can even have a complete back up of the system in your personal cloud.
Looks nice indeed, but one little thing wasn’t taken into account for guys like me. That music computer has a totally different keyboard layout (finnish).
I was able to disable the synchronisation on both systems after some thourough looking on how to do this. But still up to this day i have to switch the keyboard layout to my native language from the finnish layout every time i want to login with my internetbuddy, or login is an unpassable challenge with that new machine.
So that looks like the way things are going with windows. Complete backup in the cloud. With that addition that this is not yet fully stable when someone has multiple systems under one windows account. so it seems at least. 
kind regards,
R.