The most awaited release of the year, Windows 7, is available from today (October 22nd 2009). You can do lots of customizations on Windows 7 like themes, wallpapers etc and Microsoft has released set of new themes for Windows 7. These themes are mainly of product brands and can also be said as sponsored themes. These brands include Coca-Cola, Ducati, Porsche, Gears of wars, Ferrari etc. These themes includes wallpapers of the respective brands packed in them.
You can download these themes from Microsoft Website.