i am using diffmerge with success since some month for our semantic models.

Is the default GUI shown on the wiki can be extended to "group" differences ( we are thinking about grouping semantic and graphic differences in a common item in the tree)?

Do you plan to support diff/merge directly on graphical editors (like emf compare)?

Also, i can't find any pointers about comparing models with remote versions. is this supported ?

Quote:

Is the default GUI shown on the wiki can be extended to "group" differences ( we are thinking about grouping semantic and graphic differences in a common item in the tree)?

Not with the 0.2.0 release, but the upcoming 0.3.0 release will make it possible to customize the default GUI to a great degree. The creation of the main viewer will be delegated to the comparison method (IComparisonMethod), which is the entry point for customizations at GUI level. It means that the writer of a diff/merge customization will be able to obtain the default GUI and customize it as he wants: GUI extensions, addition of filters, change of content/label provider... He may even replace it completely, provided that the substitute inherits from predefined abstract class AbstractComparisonViewer.
This ability is already provided in recent builds.

Quote:

Do you plan to support diff/merge directly on graphical editors (like emf compare)?

We do not plan to integrate diagram visualization in the default comparison GUI. The main goal of EMF Diff/Merge is about providing the ability to manipulate models by merge in a wide range of application contexts, more than having an integrated GUI like the one of EMF Compare.
We are currently working, however, on improving the integration of the default GUI with graphical modeling environments thanks to the addition of simple facilities like navigation and highlighting. The results of this work will be integrated into the 0.3.0 release.

Quote:

Also, i can't find any pointers about comparing models with remote versions. is this supported ?

If I understand your question correctly than no, we have not worked on an integration of the default GUI with Team facilities.