What do you mean by theoretical? Looks like in that team itīs Nokia employees working with other people: http://wiki.meego.com/ARM/N900 Itīs put up by Nokia.
Yes itīs not going to be official release from Nokia and not supported as officially like meego, but then again if you are saying itīs dead on behalf of Nokia you are just lying and spreading FUD.
When someone says that N900 is dead to Nokia then he is saying that there is no future for it in eyes of Nokia. What else does it mean? Still facts show quite contrarty that there is something happening.