Is there any way to easily see the comprehensive differences between two versions? We have an application that is still on version 2012.1.326 that we are intending to upgrade to the latest, but there is no simple way to tell what breaking changes might have been made. Our customer is asking us what features may no longer work as expected, but it would be practically impossible to go through every single set of release notes because there are so many between now and then. A simple replacement to "see what happens" isn't really feasible either because the application is so large and some of it was written by a third party. --------------------------------------- We’ve introduced the Telerik API Analyzer tool that helps determine the problematic areas when upgrading a WPF, WinForms or ASP.NET Web-Forms application to a newer version of our controls. You can read more about the tool in this blog post: http://www.telerik.com/blogs/api-analyzer-helps-upgrading-telerik-projects.