Girls Aloud talk reuniting, career highlights and recording new material as they celebrate ten years in the business and another tour.
Radio 1 DJ Nick Grimshaw introduced them at the press conference in London and said the five - Cheryl Cole, Sarah Harding, Nadine Coyle, Kimberley Walsh and Nicola Roberts - were "the defining UK girl group of the modern era".
They confirmed the release of their new single, Something New, on November 18 and a greatest hits album, called Ten, will also be released.
There will be four new songs on the album and it will come with a second disc of tracks chosen by fans in a vote.
This year marks a decade since they were put together by the ITV show Popstars: The Rivals and claimed their first number one with Sound Of The Underground.
Roberts said the reunion was "meant to be" in their anniversary year, while Coyle said they would "wait and see how the fans react" before deciding what would happen next.
Cole said: "We haven't actually made any plans further than the tour."