Where: Berne, Switzerland
When: September 12 - 19, 2015
More: 36 nations to compete in the mixed competition, featuring foursomes of two men and two women in each.
Fun Fact: Mixed doubles curling has its own separate world championship (Hungary is the defending champion), and is to be a new Olympic event, yet men and women's teams are still contested separately at the Games.
Official: http://www.worldcurling.org/wmxcc2015