Trolltech announced a while ago the developement of a plugin to design Qt C++ applications in Eclipse.
It would be great if you could create a C/C++ distribution with Qt, or release it as a plugin for the current distributions you offer.
The plugin is on RC yet, but apparently it works fine...
For more info:
http://trolltech.com/developer/downloads/qt/eclipse-integration-download
http://labs.trolltech.com/blogs/2007/07/11/develop-qt-applications-in-eclipse/