I wonder how many different names this tool kit already had. Just some months ago, Microsoft renamed Business Desktop Deployment (BDD) 2007 into Microsoft Deployment 4. The name of the new version, which was released today, is Microsoft Deployment Toolkit (MDT) 2008. I guess many got confused by the former name because they thought it would be another deployment tool which is not the case. MDT is indeed just a tool kit, but one that is delivered without the tools. That means you have to download the tools you need for your work. The new version has quite a few new features.
Source : 4sysops.com