There are a few facts that those on the right, and Woodward, seem to want to obfuscate.
1. Nicholas Kristof published an op-ed piece in the NYT May 6, 2003, well before the Pincus piece of June 12, 2003.
Quoting Kristof-
"I'm told by a person involved in the Niger caper that more than a year ago the vice president's office asked for an investigation of the uranium deal, so a former U.S. ambassador to Africa was dispatched to Niger. In February 2002, according to someone present at the meetings, that envoy reported to the C.I.A. and State Department that the information was unequivocally wrong and that the documents had been forged."
Baradei had proven the forgery in March.
To Washington insiders, that person and that source was clearly Wilson- His trip to Niger was never a secret, at all, even though press coverage at the time was sparse. It was Kristof's article, not Pincus', that prompted the hounds be loosed on Wilson. Woodward's revelations fall right into the timeline.
http://en.wikipedia.org/wiki/Plame_scandal_timeline#March_2003
2. Woodward does not claim that Plame was not discussed in his phone conversation with Libby. Quite to the contrary, he uses the Ronald Reagan defense-
"I also testified that I had a conversation with a third person on June 23, 2003. The person was I. Lewis "Scooter" Libby, and we talked on the phone. I told him I was sending to him an 18-page list of questions I wanted to ask Vice President Cheney. On page 5 of that list there was a question about "yellowcake" and the October 2002 National Intelligence Estimate regarding Iraq's weapons programs. I testified that I believed I had both the 18-page question list and the question list from the June 20 interview with the phrase "Joe Wilson's wife" on my desk during this discussion. I testified that I have no recollection that Wilson or his wife was discussed, and I have no notes of the conversation."
No Recollection is not a statement of fact or any kind of actual denial, as any legal scholar would testify.
http://www.cnn.com/2005/POLITICS/11/16/woodward.statement.ap/index.html
And, of course, we get the rather tired "maybe it wasn't a crime" routine, and all the obfuscating around that bit of fluffery.
Clearly, Fitzgerald believes that a crime was committed, otherwise his investigation would have ended almost 2 years ago- he wouldn't have found it necessary to call any witnesses before the grand jury, at all. As to who actually committed the alleged crime, Fitzgerald apparently has insufficient evidence to file charges at this time.
He does, however, believe that he has sufficient evidence to indict Libby for trying to cover that person or persons' tracks by lying to the grand jury.
Lying to a federal grand jury, or to the FBI, is, by definition, a felony, regardless of the subject matter or whether or not any charge is ever filed wrt the original cause of the inquiry...