It will be completely open: once we publish it, you get also the schematics and the sw, both the one running on the onboard uC (ST ARM9) and the one for the host PC (scope-like SW).
I have to say that I was a bit disappointed that in general nobody was really interested in kernel development, but maybe the maemo community has developed itself into a userspace-focused group. And that's also what our marketing likes, so I suppose it's ok anyway.