[Howlin]

I'm not sure the White House "released" these documents, period; most articles are quoting CBS.

The documents that the White House has were faxed to them by CBS.

And why would the White House make a big deal out of them being fakes, when we can take the ball and run with it?

[Petronski]

Kevin Drum:

UPDATE: I now have copies of the memos the White House released, and they are just versions that CBS faxed to the White House the day before the 60 Minutes segment aired. There's no indication that the White House had its own copies of these memos and had been sitting on them.

Apologies.

Source.