When you write a press release you typically either say "for immediate release" or "for release at (time/date)." The contents of the release are under embargo and not to be disclosed (in theory) until the release date and time. Presidential speeches for instance are aften given in advance to the press, which is how every channel has a talking head saying "We expect the President to say ....... in his speech" before it is given, and how the talking heads already have comments right after the speech -- they knew what was going to be said. There is no law about this, just honor. Drudge is threatening to release what he was told before the date and time he was authorized to release it.
Drudge probably got someone elses copy unless they gave him one knowing he would release early.
and end it with
-30-
or if you're oldschool..
xxx