The Girls Aloud member is expected to premiere her song 'Beat Of My Drum' at the end of this week.
The track was produced by Major Lazer, who were behind Beyoncé's latest single 'Run The World (Girls)'.
Diplo - one half of Major Lazer - took to his Twitter account earlier today to declare: "Watch out for this crazy awesome unlikely collab i did with @NicolaRoberts coming soon (sic)."
Roberts then re-tweeted the message, adding: "3 days to go..."
Metronomy frontman Joseph Mount, who has also worked with Roberts, recently revealed that the 25-year-old's solo material "will surprise" the public.
Mount also added that Roberts's material has been inspired by the work of Robyn and M.I.A.