The Lone Star State accomplished what Canadians couldn't (story) when 1,859 six string toting Texans at a festival eclipsed the record of 1802 set in Germany.  Expect the Germans to appeal - the new record was reached with acoutstic guitars, while the record that fell and the subsequent attempt to beat it involved electric instruments.  Two nice notes about the new record: Guitarist #1803 played a Gibson Les Paul in tribute to the guitar pioneer who died recently at 94 (story), and proceeds from the event and the auction of that guitar went to the Welcome Home Project, a campaign that provides music therapy for wounded troops.
Gibson.com