I believe Maemo is officially dead as far as Nokia is concerned and from what I gathereed from the reviews/articles I read prior to buying my N900, I don't think they ever had any real plans for it to be a commercial platform like Symbian, otherwise they wouldn't have left it as open as it is.

So being a primarily community run platform, Maemo, like Marmite, is something you either love or hate, depending on what you actually want from your phone. Personally, I'm on the love side of the fence. I just hope that the N900 isn't the last phone to support this truly amazing OS.