New Keyboard shortcuts on Windows 8.1.

Here is the list of few New KB Shortcut for Windows 8.1

Shortcut	Action
Windows Key + S	Open Search Charm to search Windows and Web
Windows Key + Q	Search within the opened app
Windows Key + F	Search files
Windows Key + Z	Get Commands and Context Menus within an app
Windows Key + . + Right Arrow	Snap app to the right
Windows Key + . + Left Arrow	Snap app to the left
Ctrl + Plus (+)	Zoom in on Start Screen
Ctrl + Minus (-)	Zoom out on Start Screen
Windows Key + Down Arrow	Close an app
Windows Key + Start Typing	Search your PC
Windows Key + O	Lock the screen orientation (portrait or landscape)
Windows Key + Ctrl + Spacebar	Change to a previously selected input language
Windows Key + P	Choose a presentation display mode
Windows Key + X	Open Start Button options
Windows Key + Home	Minimize all but the active desktop window