Uhhh big deal? Drivers are already updated through Windows Update. All of my computers with integrated graphics use ATI graphics, and they all update through Windows Update. All of my dedicated cards are Nvidia and they all update through Windows update. Both my gaming computer and my media computer downloaded new Nvidia drivers through Windows Update last week.
The Windows Update drivers are typically far behind the latest release. It doesn't really matter for integrated stuff, but for discrete cards you really should be using the drivers from the NV or ATI website.