Fragments. Provide support for segregation of UML2 resources
into 'fragments' (e.g. *.fragment.uml2) with packages as root elements.
Features. Make derived features changeable (where appropriate)
and improve support for unions, subsets, and supersets (where
Importer / Exporter. Provide an exporter that takes advantage
of the new exporter framework in EMF to convert Ecore models
to UML (*.uml) models, in addition to an importer that converts UML
models to Ecore.
release notes available at http://www.eclipse.org/modeling/mdt/news/release-notes.php?project=uml2&version=2.0.0