There were changes to Visual Studio licensing effective from January 2015 and the Visual Studio 2013 and MSDN Licensing Whitepaper is updated to reflect this. And what were the changes?
Simply that target servers receiving automated deployment from Release Management Server no longer require a Visual Studio Deployment licence.
The only other change to the document is that the recently added requirement for a “Declaration of MSDN Licenses” is removed. Get the guide here: http://bit.ly/1JQmpGU.