One of the questions many are asking themselves regarding the upcoming release of Windows Vista early next year is how will they actually install it? Is it an upgrade? A clean install? Does it require the sacrifice of a dozen chickens and a pint of bats blood? Well, today Ars Technica is reporting on the official upgrade matrix, a chart from Microsoft released that details what you need to do to get from your current version of Windows to any of the Vista editions.
The matrix covers Windows versions from Win2k and up. Sorry WinME/9x users, no upgrade for you. You'll be required to purchase a full copy and do a clean install.