Well, somebody asked yesterday about that in the french language Bookeen blog.
The answer was
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La Muse FrontLight ne remplace pas l’Odyssey qui est toujours disponible (modèles Essential et FrontLight), elle vient plutôt enrichir notre gamme de liseuses avec un nouveau modèle 6″.
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http://blog.bookeen.com/fr/bookeen-p...cean/#comments
While my French is worse than my English (and my English is far from perfect) I understand: Muse doesn't replace Odyssey.
Strange having very similar device but ...