Girls Aloud have confirmed they are getting back together three years after splitting up to pursue solo careers.
The group - who celebrate their 10th anniversary next month - put a countdown clock on their website, marking nine days until Friday, October 19.
Girls Aloud are expected to perform on Strictly Come Dancing, BBC1's rival show to Simon Cowell's The X Factor.
Band member Kimberley Walsh is competing on the ballroom dancing show, while Cheryl Cole was a judge on both the UK and US versions of The X Factor.
However, the band - who formed on Popstars: The Rivals in 2002 and went on hiatus in 2009 to focus on individual projects - have not yet released any details of how they will be marking their return.
Their official site provides no information at all other than the countdown, with the word Ten above the clock, and the chance to register for updates.
But the five-piece are said to have teamed up to film a video for their comeback single after recording the lyrics for the track separately.
Walsh, Nadine Coyle and Nicola Roberts recently watched Cole perform a London date on her solo tour, A Million Lights.
Fellow bandmate Sarah Harding was meanwhile said to be in a studio recording solo material.
Cole had previously hinted that the Sound Of The Underground singers would mark their 10th anniversary in November on "our birthday".
She has now tweeted: "Today is a very good day to be a Girls Aloud Fan! #GirlsAloudAreBack."