Leaked Windows 8.1 Update 1 screen shots point to more tweaks to aid desktop users
WZor's screen shots indicate that users will be able to pin Metro-Style/Windows Store apps on the desktop taskbar. It's not clear whether clicking on a Metro-Style app from the desktop taskbar would open and run that app on the desktop or take users back to the Metro environment.
Either way, allowing desktop users to pin Metro-Style apps would be a step along the way to making the transition between the two different environments in Windows 8 -- the desktop and the Metro worlds -- less jarring. It also would be yet another nod to users who prefer working in the desktop environment to the Metro one.