What a puzzle.
I think this site first broke the 'story'
www.sportsplodder.com/ Doesn't look like a reputable source, does it? Then these people
VelocityNation | New York Bike Racing ran it, saying they had an anonymous source. Then Velonews goes with it. Then the mainstream media copy it from Velonews.
If it's all going to be confirmed in Vanity Fair it would have to be written ages before publication - they have a lead time of a couple of months, don't they? So I don't see why Lance would use that sort of magazine to break the story - it's bound to leak. I would have thought he would break it on TV.
Anyway, why on earth would Lance want to cross swords with the French dope testers now that his old EPO samples have come to light?
Having said all that the story has been all over the US media for a day, and Lance hasn't denied it.