Authors Guild v. HathiTrust
Full Text of Answers Response Filing (25 pages; PDF via The Public Index)
Document is dated December 3, 2011.
Professor James Grimmelmann has several tweets (dated December 3, 2011) with facts and analysis. He notes that an order has been entered that says that an AG v. HT trial is set to being in November 2012.
Hopefully, Grimmelmann will have more on The Laboratorium blog.