Official A is now identified as Karl Rove (see post below.) The Washington Post reports he could now be a witness against Lewis Libby.

I suspect that's one reason Karl Rove hasn't been charged. As I've speculated repeatedly, I think Rove has a deal. But, like most prosecutors, Fitzgerald isn't buying a pig in a poke. He wants to see how helpful Rove is in his trial testimony against Libby (and any future indictees) before agreeing either to give him a complete pass or ask the Court to give him probation if he pleads guilty.

If Rove has a deal in the works, I think it won't be finalized or made public until after he has finished cooperating. And that won't be until Libby's case is over. I still think Libby will never go to trial. It seems he has been intent on protecting Cheney, to the point of lying. His new lawyer may be able to work out a plea agreement that provides for a sentence reduction to an amount Libby can live with to spare Cheney from having to testify at his trial.