QVT (Query/View/Transformation) is a standard defined by the Object Management Group for specifying model-to-model transformations. Model-to-model transformation is a key aspect in a model-driven development, and QVT is one of the most popular transformation languages.
The new QVT plugin significantly increases MagicDraw usability while working with model transformations. There is no need to export your model to EMF UML2 XMI in order to run a QVT transformation. From now on, you can run model transformations directly in MagicDraw - the QVT plugin uses the Operational QVT implementation that is provided by the Eclipse M2M project.