High Quality Content by WIKIPEDIA articles! X-Mass Festival is a heavy metal festival/tour held annually in Europe since 1999. IT is organized by the Belgian booking agency Metallysee. THe 2006 and 2007 editions have been cancelled, and the future of the festival is in doubt. MEtallysee plans to launch a new tour in January 2008 under the name Black Winter Festival. THe 2006 edition was cancelled after Unleashed, Six Feet Under, God Dethroned, Cataract and soon later Krisiun decided to pull out, Trail of Tears disbanded and Soilwork refused to headline the tour. THe last announced lineup featured Gorefest, Belphegor, Prostitute Disfigurement, Madder Mortem, SkyForger and Darzamat.