A Distinct Possibility.
If true, what does it mean? It means no crime. Saying so & so is a CIA employee is not a crime. The law in play here is very detailed and specific and inadvertent leaks are not covered. Of course, the article speculates Libby's source may have been working to damage Valerie Plame. However, this gives credence to Bob Novak's claim that it was widely known that Valerie Plame worked for the CIA that it wasn't a deep secret in Washington Society.
Of course, this sort of information is not supposed to be getting out to the public and therefore is not completely trustworthy, but it underscores the fact we do not know everything that has gone on. I do hand it to the AP reporters for considering the fact the information on Valerie Plame could have been plain old "dinner talk" and not the nefarious plot those with Bush Derangement Syndrome characterize it to be.