The Official Photo Book was published in early 2014 to mark the 40th anniversary of the band's Eurovision victory. The book reveals that part of the reason for the band's outrageous costumes was that Swedish tax laws at the time allowed the cost of garish outfits that were not suitable for daily wear to be tax deductible. 2016–present: Reunion, Voyage, and ABBAtars On 20 January 2016, all four members of ABBA made a public appearance at Mamma Mia! The Party in Stockholm. On 6 June 2016, the quartet appeared together at a private party at Berns Salonger in Stockholm, which was held to celebrate the 50th anniversary of Andersson and Ulvaeus's first meeting. Fältskog and Lyngstad performed live, singing "The Way Old Friends Do" before they were joined on stage by Andersson and Ulvaeus. British manager Simon Fuller announced in a statement in October 2016 that the group would be reuniting to work on a new 'digital entertainment experience'. The project would feature the members in their "life-like" avatar form, called ABBAtars, based on their late 1970s tour and would be set to launch by the spring of 2019. In May 2017, a sequel to the 2008 movie Mamma Mia!, titled Mamma Mia! Here We Go Again, was announced; the film was released on 20 July 2018. Cher, who appeared in the movie, also released Dancing Queen, an ABBA cover album, in September 2018. In June 2017, a blue plaque outside Brighton Dome was set to commemorate their 1974 Eurovision win. On 27 April 2018, all four original members of ABBA made a joint announcement that they had recorded two new songs, titled "I Still Have Faith in You" and "Don't Shut Me Down", to feature in a TV special set to air later that year. In September 2018, Ulvaeus stated that the two new songs, as well as the TV special, now called ABBA: Thank You for the Music, An All-Star Tribute, would not be released until 2019. The TV special was later revealed to be scrapped by 2018, as Andersson and Ulvaeus rejected Fuller's project, and instead partnered with visual effects company Industrial Light and Magic to prepare the ABBAtars for a music video and a concert. In January 2019, it was revealed that neither song would be released before the summer. Andersson hinted at the possibility of a third song. In June 2019, Ulvaeus announced that the