Duffy will release the song Stepping Stone on September 1, reports MTV.co.uk.
It will be possible to download the single, and the song will also be featured on the Welsh singer’s next album.
It was recently announced that Duffy is the artist with the most albums sold for 2008, and is the first artist in England to sell more than a million discs this year. Her first disc, Rockferry, sold more than 2.5 million copies.