While I was composing the previous post, the following arrived in my "press release" mailbox. I reproduce what they sent exactly, including the misspelling of the show's name…
The Mammia Mia! film fansite is NOW live! This is THE place where fans of the worldwide smash hit musical merge with movie buffs from all of over the country to discover a new world of friendship, conversation, support, and
community… Universal Pictures cordially invites you to join the Mamma Mia! fansite today! Join fans worldwide, swap information, trade trivia facts and learn more about the upcoming film version of the musical starring Meryl Streep, Pierce Brosnan, Colin Firth, Dominic Cooper and Amanda Seyfried. "My My, how can you resist that? …" Check out the film's official Mamma Mia! fansite and sign up today!
And there's also a link to this video preview. In the tradition of the recent Sweeney Todd film, it doesn't make the product look like a musical and certainly doesn't say "based on the smash Broadway show." In this case, they've decided to pass it off as a teen sex comedy starring Meryl Streep. Or maybe that's the movie they made.