The 20th issue of the ABBA Magazine (published in January 1980 from what I can tell) starts with a review of the concerts in London and then confirms that the tour will resume in Japan in March.
The first major article provides a brief "Hello 1980" from each of the group where they discussed the plans for the year including ; Agnetha's "I'm Still Alive" to be included on the next ABBA album, Bjorn and Benny's song writing holiday to Florida and Agnetha and Frida re-recording tracks in Spanish for inclusion on a new album.
The next piece provides a look back at the groups activities during 1979 including singing "Chiquitita" at the United Nations building during the UNICEF concert, releasing the "Voulez-Vous" album, filming the video for "Gimme! Gimme! Gimme!", the "ABBA In Switzerland" TV special and of course the 1979 Tour.
The issue also included a continuation of the ABBA story in a cartoon format as well as recent pictures of the group.