There will be no NDoc 2.0
According to this blog post
the NDoc project is over - there is no NDoc 2.0 on the horizon. This is bad news indeed and I can't say anything else than "thank you Kevin Downs for the great effort and an excellent free tool".
On the bright side, there is MS' Sandcastle on the horizon to replace NDoc. Check out the blog here
and the thread
on MS forum. Apparently first CTP release is imminent. Follow the hyperlink on the blog to download first CTP. Let's hope that it will be a worthy NDoc replacement.