Windows 8 is here, and of course Microsoft wants you and everyone you know to upgrade to its newest operating system. Heck, Microsoft's even taken some of the sting out of upgrading by putting in place several promotions, such as offering Media Center as a free download to Windows 8 Pro users until January 31, 2013. But hey, if you're of the opinion that Microsoft will have to pry the Start menu from your cold, dead installation of Windows 7, then more power to you. Just be aware that you aren't likely to see a second Service Pack, so for all intents and purposes, what you currently see with Windows 7 is what you get.