Swedish pop group ABBA may be preparing a surprise for fans, as a Twitter user called ABBAVoyage and a website with the same name appeared online on Thursday.
"Join us," reads the tweet inviting the fans to a mysterious website, where they can register to be "the first in line to hear more about ABBA Voyage."
The public relations agency ZAP PR confirmed the authenticity of the website but did not want to provide further details.
Fans are now speculating what the band may be preparing and whether the surprise could be a new song, a new album or even a new tour.
The quartet of Agnetha Faltskog, Anni-Frid Lyngstad, Bjorn Ulvaeus and Benny Andersson recorded new music in 2018 that has not yet been released.
At the beginning of 2021, Ulvaeus said that the songs would be published this year.