Windows Phone Central has had few isolated reports recently of changes to the Bing search results on Windows Phone 8. We can now confirm that they are real and coming to all Windows Phone 8 devices soon. The changes include a new layout and appear to be the result of usability feedback to Bing.
One of those changes that was brought to our attention is the ability to receive a direct definition of a word in the results (seen above), as opposed to clicking a link to a dictionary site. The biggest change though is in the number of pivots, dropping from the previous four to three: Web, Local, Media, and Shopping versus the new Web, Images and Video. In addition to that change, the pivots themselves have been re-designed with a new layout for information.