According to Dan Hill of Action Sports Enterprises the place and time of WISSA 2012 are official:
St.Ignace, Michigan, February 20-26, 2012
The draft of the City Chamber of Commerce invitation is available here.
Dan Hill is the Chief Organizer of the event. He collects sponsorship proposals, suggestions and advise in regards to the event. We would be grateful if you help spread the word about WISSA 2012 World Championship and actively participate in preparation and races!