It would be the first system implementing the MeeGo APIs and a MeeGo UX plus applications etc from Nokia's side. And what people would want to upgrade to. Either by buying a new device with Harmattan, or by running the community backport of Harmattan. A proper 'MeeGo' (RPM based system) with Nokia differentiations, is yet to be seen - hence we can't want to backport it yet Give MeeGo (RPM based) time to mature. When it is, I bet it runs on N900 without big problems.