The future of Maemo is more than likely the same as other systems that were well loved, willing to be taken care of by their highly involved communities - think Zaurus and Familiar Linux for iPaq - and ultimately will end up the same fate as those aforementioned projects; forgotten and poorly managed due to proprietary components. With that said I hope that's not the case. But if Nokia was happy to let Maemo get to "bastard stepchild" status since 2006 to now, my doubts that it will be truly open sourced and released to the masses is that much lesser. I do not wish that, however I feel as if that's going to be the case.