 In TFS 2010 and 2012, the WF templates (Extensible Application Markup Language) files were stored in source control and could be edited and versioned directly from source control.In TFS 2013, these files were removed to eliminate clutter and streamline the build process.The WF templates can still be downloaded, edited and stored in source control if desired and TFS 2013 does not break existing TFS 2010 or 2012 build process templates.