For those who are worried about compatibility of the QWidget based widgets in Dui, you might be interested in about the itemview-ng project in Qt Software.

Their goals is to make all the Q*Widgets to run natively on QGraphicsView. I guess this would solve most of the problems discussed here related on code compatibility. I don't want comment anything about having to different platforms here because I couldn't care less about symbian stuff

See Thiago's comment on Qt labs discussion:

": to have all of the widgets available “natively” in Graphics View, to have them accessible from QML and to have native styling.

As for CSS, we’re probably just going to ditch that in favour of QML."

They will also introduce similiar kind of MVC model than DUI does. You can checkout the source code from git and check the examples.

More information:
http://labs.trolltech.com/blogs/2009...-have-liftoff/
http://qt.gitorious.org/qt-labs/itemviews-ng

For me this sounds quite good. What do you think? I'm not sure if this "feature" will be available for Maemo 6...

Addition:One thing came to my mind that there will be two different MVC mechanism when both Dui and Qt releases their systems. Instead of having two almost identical systems, could they put effort to develop only one, but make it really good?