I suspect that Apple will settle a lot of these out of court, like they have settled the recent ones out of court. And then quietly add more stringent requirements to the App approval process. After all, they already screen for content. Consider that you cannot get an App containing pornographic content through the App approval process. Somehow, the App in question got through because a reviewer did not recognize the image. What it probably means is that, in the future, Apple will probably ask for some proof of copyright for things like image content bundled with your app. That along with subtle changes to the TOS to include stronger indemnity clauses. Basically, Apple will be making the money, and the developer will be assuming more and more of the legal risk. Not good news.
That would be my guess anyway. That said, hey, here's to hoping!