It's clear the Bush people have been sitting on it. It is a completely processes NIE in everyway, except that it is not titled "National Intelligence Estimate" because anything with that title has to be released to certian members of Congress by law.
Dr. Lawrence Korb, a former senior Defense Department official now with the liberal-progressive Center for American Progress, hasn't seen the report but has discussed it with those who have. "It's a very bleak picture of what's going on in Iraq," he said. (from TPM Muckraker.)"[A] very bleak picture..." No surprise that the Bush administration doesn't want it out before the election.
TPM Muckraker has the transcript of comments on the second NIE by ranking House Intel Committee Member Rep. Jane Harmon [D-CA].
Here are the earlier reports on this NIE from TPM. here, here, here, and here.