Girls Aloud's new single Something New has leaked online, ahead of its premiere this Friday.
The track - a new song produced by the group's Xenomania production house - will be this year's Children In Need song.
It was reported recently that the girls will be performing the song live on Strictly Come Dancing next month, when the show goes to Wembley for Children In Need.
The song, which has already been pulled from YouTube, is expected to premiere on Friday, with the group having kicked off a ten day countdown last week.
Meanwhile, Cheryl Cole has revealed in her autobiography that Girls Aloud will split next year.
The girl group were formed way back in 2002 on Popstars: The Rivals, a reality show that only lasted one series but has spawned one of the most successful reality TV acts of time.
A decade later and the group and its members are some of the biggest stars in the UK, having released multiple albums and more than 20 top ten singles.
However Cheryl has confirmed in her official autobiography that the group will not be getting back together permanently.
“By the time this book is published Girls Aloud will have recorded this year’s Children in Need single, which is also a celebration of our tenth anniversary as a group, and we’ll hopefully be working on a tour and greatest hits album,” Cheryl writes.
And she reveals: “Then I think that’s it for Girls Aloud. We’ve achieved far more than any of us ever dared to dream of and, whatever happens next, I know we’ll always be in each other’s lives”
Cheryl’s book, My Story, is out on Thursday.