MeeGo-Harmattan is still MeeGo.
Everyone was more than happy to call it that last summer. Indeed, there were a number of people declaring MeeGo to be the future, and Maemo to be the past. They were led to the MeeGo paradise by the Pied Piper of MeeGo, Quim Gil.
Now that MeeGo is an embarrassment, those same people would prefer to rebrand MeeGo-Harmattan as Maemo6. Standard human behaviour.