Bob Van Voris, Bloomberg:

The U.S. filed an antitrust lawsuit against Apple Corp., Hachette SA, HarperCollins, Macmillan, Penguin and Simon & Schuster in New York district court, claiming collusion over eBook pricing.

Apple and Macmillan, which have refused to engage in settlement talks with the Justice Department, deny they colluded to raise prices for digital books, according to people familiar with the matter. They will argue that pricing agreements between Apple and publishers enhanced competition in the e-book industry, which was dominated by Amazon.com Inc. (AMZN)

Add this to the list of lawsuits involving Apple. I know who Amazon is rooting for.