Don't know how much it will affect the band, or the planned tour next year, but Mutya has left The Sugababes. She was one of the founding members of thre group. Of course this isn't the first Sugababes change and the last one saw the group move from strength to strength so hopefully this will not affect things too much. The band have said that a replacement should be announced in the next 24 hours so obviously this has been planned for sometime.
Mutya Leaves Pop Trio Sugababes (BBC News Onlinel Wednesday 21st December 2005)