Beyonce's single "Run the World (Girls)" out now

Cover of Beyonce's single, "Run the World (Girls)"
Columbia Records

(CBS) For those of you who had to be content with the demo version of Beyonce's new single, "Run the World (Girls)," good news: The real thing is now available on iTunes. reports that the video will premiere Friday. A different version of the song leaked earlier this week. The single is written with The-Dream and others.