Jean-Pierre Paradis's Blog: IE10 Compat Inspector

Compat Inspector is now available for IE10. Use Compat Inspector to quickly identify if Internet Explorer platform changes affect your site. Whether you're preparing for IE10 or still updating for IE9, run Compat Inspector on any page experiencing problems. Then watch for messages explaining potential issues and steps you can take to resolve them.

Source : IE10 Compat Inspector - IEBlog