Deep Throat Revealed???

Vanity Fair reports that former FBI official Felt was Deep Throat
http://cnews.canoe.ca/CNEWS/World/2005/05/31/1064925-ap.html

We have spent years speculating about who Deep Throat is/was and have been told time and time again by Woodward and Bernstein that the identity of this mystery man/woman will not be revealed until after he or she dies. So why now all of a sudden would Felt come forward to reveal his identity? Is Felt really 'Deep Throat' or is this just a media made legend?