An updated version of the Bing Maps WPF control has been released. This update includes improved touch behavior for Windows 8 and 8.1 along with many bug fixes. The version number has not been changed and the installer is designed to overwrite the
existing libraries. This was done to so that developers didn't have to rebuild their projects to take advantage of this update. You can get the updated version of the Bing Maps WPF control here:
http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=27165
http://rbrundritt.wordpress.com