D23: The Official Disney Fan Club, originally launched as D23: The Official Community for Disney Fans Announced on March 10, 2009, D23 represents the company’s first major foray into providing an organization for Disney fans. Membership includes a quarterly Disney twenty-three magazine, special event opportunities, and a D23 Expo, the first held in Anaheim in September 2009. The 23 refers to 1923, the year that the company was founded.