According to reports from Windows Phone 7.5 users, navigating to Google’s home page via IE9 will reveal Google’s attempt at optimizing their page for Windows Phone users. It should also feature the button “Pin Google to your start screen” which when pressed will give users the choice to pin a Google search tile to their home screen.
This feature was available before, although prior to this “makeover” it pinned a zoomed out version of the Google home page on the home screen which we can imagine is pretty ugly. Now this new tile actually looks like it has been design for Windows Phone in mind, so if you prefer using Google over Bing, you might be interested in giving this a go.