Michael Moore has confirmed he is working on a sequel to F 9/11 called F 9/11 1/2 with the backing of Harvey Weinstein which will be ready in 2-3 years, which is going to be largely the same targets as the original film.
Moore's rationale, in his own words:
We want to get cameras rolling now and have it ready in two, three years. We want to document it. Fifty-one per cent of the American people lacked information (in this election) and we want to educate and enlighten them. They weren't told the truth. We're communicators and it's up to us to start doing it now. The official mourning period is over today and there is a silver lining - George W. Bush is prohibited by law from running (for presidency) again.
A good move or a bad one, you decide.