Must be no April Fool's day joke. Apparently the United States Football League wants to return to competition with it's teams after a 30-year absence. USFL wants to become a 'Triple A, Spring Football League' for the NFL, and begin play in Spring 2013.
We probably don't need another professional team since the Gold played at Mile High Stadium for three years back in 1983 through 1985. Denver already, and always will, have the Broncos, and the Colorado Crush in the Arena Football League.