Since the announcment of the consolidation of the two projects, people often ask about the relationship between Meego and Maemo6.
There is information and discussion of this topic elsewhere.
Quim Gil gives a good explanation on talk.maemo.org:
Ari Jaaksi says, "So what’s with Maemo6? Maemo6 will be MeeGo compatible.....consider Maemo6 already a MeeGo instance."