Windows 8 is finally releasing on October 26th and comes with lots of new features, at the same time a new version of Office suite is also being released early next year. Office 2013 is the latest version to be in RTM stage and will be available early next year. Office 2013 comes with a totally new UI, although there is ribbon and other feature carried over from older version.
Once you have patched download this style and extract it to %WINDIR%\Resources\Themes. Finally right click your desktop, go to ‘Properties’ and select ‘TwentyThirteen’ as your theme.