I kind of agree. The trade secrets would be, (maybe) the design (which was leaked by Engadget a day earlier), and the added features (a front facing camera??).

Maybe the California DA didn't know the next iPhone had a front-facing camera, but anyone who would have read the Gizmodo story probably did.

Plus, Gruber told us: http://daringfireball.net/linked/2010/03/29/wsj