I think it's far too early to say the documents aren't significant - not just for their content but also the form in which they've been made available. The full 75,000-document release has yet to be studied thoroughly by more than a few reporters so far, and its full impacts will not be known for weeks or months. Or maybe, due to the sheer volume of files, the WikiLeaks release will overwhelm reporters and the public and fade - as often happens in our era of info overload. What's cool and different now, however, is we all have easy, searchable access to the digital raw files.
In their WikiLeaks form, we can all take a stab at trying to figure out what they mean, rather than a tiny handful of reporters or cognoscenti. Whether some commentators like it or not, this release is a signal event in the democratization of information in the digital era.