Well, those S.F. Chronicle reporters aren't going to have to do any jail time, because their source has revealed himself.
Remember all those journalists who were crying, saying the government should never have threatened the reporters with jail unless they revealed their source? One of their major arguments was that it was probably a federal prosecutor who leaked the secret grand jury information, so it wasn't fair for the same prosecutors to now be attacking the poor, innocent reporters.
Now that it's been revealed that the leak was a defense attorney, maybe those journalists owe the federal prosecutors an apology.