The Bing homepage features a new image every day and there’s a new utility in town called Bing Desktop that will download and set these images as your desktop background automatically. Thus, if there’s a new image adorning the Bing website, your desktop wallpaper should change as well.
Bing Desktop is however more than just a wallpaper changing application. The real purpose of the app is to provide you instant access to Bing without having to launch the web browser.
Press the Windows Key + H keyboard shortcut and the Bing search box will pop-up right in the center of your screen. It can auto-complete your search queries – just like the search box on the Bing website – and hitting Enter will show the search results in your default browser.