attila77, Milhouse, you are serious guys and you will understand this quickly: Harmattan and MeeGo come with a whole Qt based application and UI framework and a Qt style API. Maemo 5 is a different story, with a GTK+ based applications and UI framework and GNOME style API.

This is what makes Harmattan quite close to MeeGo in platform terms, while Maemo 5 is really something different. That said you can reach very similar APIs with Maemo 5, and you can also add more libraries to Maemo 5 in order to fine tune the compatibility. You can also do so with Symbian, yet you don't have problems seeing that it's pointless to call Symbian MeeGo.

We can discuss this in more details once we have a MeeGo and a Harmattan list of components to compare.

PS: about the packaging... we are talking here about API compatibility.