The notes, taken by Mr. Libby during the conversation, for the first time place Mr. Cheney in the middle of an effort by the White House to learn about Ms. Wilson’s husband, Joseph C. Wilson IV, who was questioning the administration’s handling of intelligence about Iraq’s nuclear program to justify the war.

Lawyers said the notes show that Mr. Cheney knew that Ms. Wilson worked at the C.I.A. more than a month before her identity was made public and her undercover status was disclosed in a syndicated column by Robert D. Novak on July 14, 2003.

Things just changed. While it's most likely legal for Cheney to know (he is VP after all) it might not be legal for him to tell Libby. It also means Libby knew 11 days before the first meeting with Iceberg Judy, and since this was apparantly not disclosed to Fitzgerald, Libby is basically done.

The next question is, how wide a net does Fitzgerald want to cast? From what we've already seen, he could throw one big enough to snare just about everyone at 1600 Pennsylvania Ave and the Naval Observatory and probably reel them in.

Cheney Told Aide of C.I.A. Officer, Notes Show - New York Times