On July 20, 2018, get ready to sing and dance, laugh and love all over again with the prequel to "Mamma Mia".

Emily Blunt stars in an all-new sequel with a fresh sensibility that celebrates the spirit of the original.
  February 23rd, 2007       Posted by Frederik       Display Comments

At least this is a first official release date by the films’ distributor United Artists according to article: United Artists and MGM have announced that Robert Redford’s “Lions for Lambs” will be released in North America on Friday, November 9, 2007, with the remainder of the world to roll out in subsequent months. Principal photography on the first production from the new UA, began on January 29th with Robert Redford directing and starring alongside Meryl Streep, Tom Cruise, Derek Luke, Michael Pena, Andrew Garfield and Peter Berg. Matthew Michael Carnahan wrote the original screenplay. Also, according to the IMDb, Meryl’s character will be named Ursula Leachman.