I don't think they'll highlight specific abuses, as greenwald already commented on the difficulty of that. If you point out some innocent being surveilled, you've just exposed them to the world. If you point out someone guilty being surveilled (though guilt would be impossible to determine a priori and from their perch), you've just tipped them off. I'm very curious to see the content of the next releases, and like the one of the commenters above, I do hope there's a deadman switch, though killing greenwald now would be an epic mistake on the govt's part. THAT would set off a firestorm. More than likely, they've already hacked his computer and have read the docs and are preparing how to respond to the upcoming revelations.