No official announcement about a sequel has been made.
Universal's Mamma Mia!, which boasted Streep and Pierce Brosnan among its cast, was released in July 2008 and grossed a whopping $609,841,637 worldwide, a composite of $144,130,063 domestically and $465,711,574 overseas. The film, featuring the songs of Abba, remains the box-office champ of recent movie musicals.
The Broadway production of Mamma Mia! is scheduled to end its run at the Broadhurst Theatre Sept. 12. The Post reports that cast members from all 14 years of its lengthy run will make an appearance in the final show. A block party in front of the Broadhurst will also be held.