Are you serious? That's just straight up obnoxious. "I'm gonna give you two options: install right now or install slightly later than right now...like four hours from now."

If I remember correctly, the dialog box I got would only let me delay the installation by around 8 hours, and I think there was a small link I could have clicked on to cancel the upgrade, but I didn't see it (because that's how they wanted it).

The only way this is better is that users will no longer click the X on these popups without reading them, so they won't be as shocked when they see their new desktop. I might also give them a little prep time if they know what they're doing. That's as much credit as I'll give MS on this.