The WTO Appellate Body issued its report on 5 September 2011 in the case “United States — Measures Affecting Imports of Certain Passenger Vehicle and Light Truck Tyres from China” (dispute document WT/DS399/AB/R).
Details are available on the WTO website at:
http://www.wto.org/english/news_e/news11_e/399abr_e.htm