The new track, called 'Who's That Chick', premiered online over the weekend along with its music video.
Rihanna's label has since released a statement via Twitter insisting that the clip was "a leak". It also revealed that the song was due to be issued as a promotional club single later this year.
"It’s a leak. Def Jam is pulling it down as fast as possible. The song is not a single - for the clubs only," SRP Records said.
"The album is still being put together - many songs in the mix. Can't answer for sure if it is on the album."
Rihanna also took to Twitter to address news of the video's leak, posting: "'Who's that Chick' is an online music video/commercial that we shot for Doritos and it got leaked...
"I don't want u to get confused... doritos is in no way connected to LOUD".
Rihanna releases Loud in the US on November 16.
