Actually I have readed all this:
https://neo900.org/resources
somewhere 2018 and that time I though..who can make it to work with software..and now software side can take new leap, because Maemo Leste. That is why hardware can also make new leap, because it doesn't need to be compatible to original model.

Neo900 might be death..only usefull information these days might be measurements of N900 and idea about spaceframe to give more room to new hardware. But as I said better think NeoN810 or Neo9500 than Neo900.