'Mormon Musical' will be a satirical play created by Trey Parker and Matt Stone based on the loves and lives of members of the Church of Jesus Christ of Latter-day Saints, according to a July 2009 article in the New York Post.
Broadway actor Cheyenne Jackson will reportedly play an LDS missionary, and other stars will likely make appearances in the musical, according to the Post article.
A Variety.com article says the show will run sometime between August and September, and that the play "...has potential to stir controversy thanks to its nothing's-sacred comic take on Mormonism."
South Park has often poked fun at LDS culture and beliefs, including the depiction of Joseph Smith as a superhero in one episode, and suggesting that only Mormons would make it to heaven in other installments. One South Park episode is entitled "All About Mormons," offering a cynical look at early LDS history.
Trey Parker and Matt Stone have poked fun at Mormons before on the big screen with 1997's Orgazmo, the story of an LDS missionary who becomes a porn-star superhero.