That is a tricky question to answer.

There are plenty of post complaining that Nokia won't support MeeGo-Harmattan on the N900 officially. You can certainly take that as "real user" support. However, I think most of those posters assume that would mean things like Flash, Skype, Maps, Ovi, etc.

If MeeGo-Harmattan on the N900 lacks some/all of those items, it becomes relevant to the tinkerers only, not the "real users".

My fear is unless it is determined that some/all of that software is confirmed, only tinkerers will support it, and then based on "lack of real user support" stay a tinkerer only project.