The Register (Andrew Orlowski again) summarizes well the problem of this lawsuit :
It's quite another to use its corporate financial might to stop the press doing its job. Unable to find the leaker, Apple is shooting the messenger instead.
The latter represents a violation of basic journalist ethics, and if Apple's chilling effects tactic was adopted more widely a free press would no longer be possible, with users solely dependent on corporate press releases, or a corporate PR republishing service, such as Walt Mossberg. Which is exactly how Apple CEO Steve Jobs likes it.