The Black Eyed Peas frontman promised to upload a finished version of the track online today but was unable to after picking up an injury whilst shooting the song's accompanying clip.
He posted on his official Twitter page: "Im sorry everyone...I hurt myself pretty bad filming the video for (T.H.E) #thehardestever...& i couldn't upload the song like I promised (sic)".
The star was recently forced to deny reports that the Black Eyed Peas were splitting up after Kanye West paid tribute to them on Twitter.
He also claimed that Cheryl Cole could be collaborating with Justin Bieber for her next album, insisting her new material is "the best...she has ever released".
Listen to a demo of will.i.am, Jennifer Lopez and Mick Jagger's new single 'T.H.E' below: